When you're shopping for vape gear online, real user feedback is worth more than any product description. That's why we've compiled 40+ genuine customer reviews from our Reviews page - spanning February to June 2026 - and paired them with thorough product research to give you the complete picture.

Every review below is from a real 2FDeal customer. Every product has been researched for specs, strengths, and honest shortcomings. Our goal is simple: help you make an informed decision.

-> See all reviews (including yours) at 2FDeal Reviews ->

Radiator 22mm MTL RTA - "Silent, Smooth, Flavorful"

The product: The Radiator 22mm MTL RTA is a Chinese-original design (by Benzene Ring Company, manufactured by Auguse) that made waves in 2023 for its innovative airflow system. At 22mm diameter and 4ml capacity, it's a compact top-airflow MTL RTA with a unique twist - the air enters through the top cap but is redirected to hit the coil sideways, achieving the flavor concentration of a bottom-airflow atty without the leaking risk.

Key specs:

What our customer says:

*"the mtl airpins are incredible silent, impossible to make it wistle even after longer use and different vape styles(mtl/rdl). wicking works great aswell, building it is very easy. sadly the refilling is not simple, you have to unscrew inner air pipe first, otherwise it will block tank. if you force the tank it, you will strip the inner thread because of different threadpitch. rta arrived cleaned and is machined very well, i dont like the engraved radiator text at the vaporchamber though."*

- Fabi, Jun 3, 2026

Pros:

• [OK] Genuinely silent airflow - no whistle at any setting. This is rare in MTL RTAs
• [OK] Excellent flavor clarity - the top->side redirect creates a turbulent airflow that amplifies subtle notes without overheating
• [OK] Wide air pin selection - 6 pin sizes (0.8->1.6mm) + block pin, covering tight MTL to loose RDL
• [OK] Easy build - dual posts with adequate spacing, straightforward wicking
• [OK] Well-machined - clean threads, arrived pre-cleaned

Cons:

• [X] Outdated refilling - requires unscrewing the inner air pipe; force it and you'll strip threads
• [X] Capacity less than advertised - the wide chimney eats into the 4ml; expect ~3.5ml usable
• [X] Engraved "Radiator" text on the vapor chamber may divide opinions aesthetically
• [X] Build quality is decent, not premium - machining is good but doesn't rival higher-end German or US-made attys

TL;DR: A well-engineered MTL RTA with a genuinely innovative airflow system that delivers on flavor and silence. The refilling hassle is the main trade-off. Best for vapers who prioritize flavor and build quality over convenience. Radiator 22mm MTL RTA ->

FEV / Flash E Vapor 4.5S Style RTA - "The Legend, Still Going Strong"

The product: The Flash E Vapor (FEV) is a German-designed MTL RTA that has been in continuous production for over a decade. It pioneered the top-down side airflow concept that later influenced the Bishop, Era, and dozens of other RTAs. The V4.5S version at 23mm diameter holds 4.5ml of liquid and uses a unique wick rod (driver) system - two stainless steel rods draw liquid from the tank above to the cotton below via gravity and capillary action, rather than having the cotton sit in a juice well.

Key specs:

What our customer says:

*"machining 10/10, product was cleaned. putting in coil works good, works well with strong mtl, like original. no visible base from outside and vaporchamber is shorter then normal. works with original airscrews and is flush with 23mm tanks. totally recommend it for fev lovers."*

- Fabi, Mar 25, 2026

*"Good Piece... where do I start... you'll get a 51.92mm Piece, that is almost a whole FEV - all you need is a Base(Deck), Wicks, Air Pins and Drip Tip. After a few Trials and Errors, I ended up with 5mm 28ga316 and 4 Turns - loose Cotton - 7 Watt and never a slight taste of overcooking - with instant response and lots of vapor. Single 2.1mm Airpin works just perfectly for me."

- Artu, Feb 23, 2026 (4-week daily use review)

Pros:

• [OK] Legendary coil life - the wick rod system keeps cotton barely moist, not soaked. One coil can last 4+ weeks
• [OK] No dry hits, ever - gravity-fed wicking means as long as there's juice, the coil stays saturated
• [OK] Consistent hit every time - draw resistance doesn't change as the tank empties
• [OK] Excellent throat hit - widely considered among the best MTL throat hit of any RTA
• [OK] Chain-vape friendly - massive chamber dissipates heat, never gets hot
• [OK] Clones are outstanding - YFTK and SXK versions are 1:1 replicas at a fraction of the cost (<$30 vs EUR157)
• [OK] ULTON FEV V4.5S also available - offers the same 1:1 quality at a competitive price. Browse ULTON FEV ->

Cons:

• [X] Steep learning curve - coil placement height, cotton density, and rod seating all require trial and error
• [X] Polarizing looks - "ugly and huge" is a common reaction. It's industrial, not elegant
• [X] Tight MTL requires separate air pins - the included 1.2mm is borderline MTL; 0.8mm pins must be purchased separately
• [X] Outdated build deck - dual-post screw terminals are less convenient than modern spring-clamp designs
• [X] Not for on-the-go - the height and unique shape make it a desk/house atomizer
• [X] First tank metallic taste - even after thorough cleaning

TL;DR: FEV is not the RTA that wows you on the first hit - it's the one that never lets you down, day after day, month after month. If you value consistent MTL performance and coil longevity over flashy looks, the YFTK FEV V4.5S clone is the best $25 you'll spend this year. FEV Style RTA ->

Boro Bridges - "The Best Flavor in a Boro System"

The product: A Boro Bridge is the rebuildable atomizer deck that goes inside a Boro-compatible mod's tank (such as a Billet Box, Cthulhu, Stubby, or 3D printed mod). It replaces disposable coil heads with a DIY build deck, giving you full control over your coil and wicking. The Bridge is the heart of the entire Boro system - it determines your airflow, flavor profile, and build compatibility.

Popular Bridge types at 2FDeal:

What our customers say:

*"Impeccable besides a view burrs left on the Air-Bridges. But they are hidden anyways so i don't mind it. The rest is machined very well and all runs smoothly. You get a spare stainless steel tank which is a big plus in my opinion."*

- Simo, May 18, 2026

*"Love this bridge. The flavor is fantastic, and it comes with tons of accessories... All in all it's a great buy for the price considering everything you get with the whole set. Also, if the guy that said he couldn't figure out what the hex key was for in his review happens to read this, if you remove the air pins the hex key fits in through the bottom so that you can disassemble the positive post to get a good thorough cleaning of the device."*

- Jaso, Feb 13, 2026

Pros:

• [OK] Flavor ceiling - a well-built bridge outperforms any stock-coil tank
• [OK] Endless customization - choose your airflow pin, coil, cotton, drip tip, even the tank color
• [OK] Cost-effective long term - wire and cotton are cheap; you never buy coils again
• [OK] Leak-resistant design - the Boro system is inherently more leak-proof than traditional RTAs
• [OK] Active community - hundreds of aftermarket parts, panels, and accessories

Cons:

• [X] Fiddly build deck - the small working space challenges large fingers and aging eyes
• [X] Initial cost - a quality bridge costs $25-65 plus the mod itself
• [X] Some incompatibilities - certain bridges need specific tanks or adapters
• [X] Hot bridges sell out fast - popular models like Monarchy Mobb TC can vanish in days
• [X] Cleaning is tedious - disassembling a bridge for deep cleaning takes patience

TL;DR: A Boro Bridge transforms your mod from a convenient pod-style device into a high-performance rebuildable. If you're comfortable building coils and want the best possible flavor from your Boro system, this is the upgrade. Browse Boro Bridges ->

SXK 3D Printed Boro Mod - "Lightweight, Affordable, DNA-Powered"

The product: SXK produces two 3D-printed Boro-compatible mods - the BMM Borat Style (86x51x24mm) and the Psychomod KBR-S Style (72x53x23mm). Both use PA66 nylon 3D printing for the shell, paired with a genuine Evolv DNA60 chipset (or SXK's own SEVO 70W chip for a budget option). At just 43-70g, these are among the lightest Boro mods available.

Key specs:

What our customers say:

*"I was pleasantly surprised of the quality. The machining is really good and the threads run smoothly. The different Atomizer bases are a nice touch to customize plus you can allign the atomizer however you like."*

- Simo, Apr 6, 2026

*"Nice tiny mod, it's very light, the quality of the 3D Print is good but there is room for improvement. The sidepanels aren't flush. The switch of the fire button is loose and the plus & minus buttons aren't exactly easy to press. Chip looks similar to a DNA60."*

- Simo, Apr 6, 2026

Pros:

• [OK] Genuine DNA60 chip - Evolv's industry-standard temperature control & eScribe configurability
• [OK] Ultralight - at 43g (KBR-S), it's barely heavier than an empty pod
• [OK] Affordable entry to Boro - fraction of the price of authentic BMM or Psychomod
• [OK] Standard Boro compatibility - works with every Boro tank and bridge on the market
• [OK] Compact SBS form factor - narrower than a Billet Box, fits any hand

Cons:

• [X] 3D print finish is rough - visible layer lines, mold marks, not CNC-smooth
• [X] Quality control inconsistency - some units have loose buttons, uneven panels, or electrode contact issues
• [X] DNA60 limits power - 60W max won't satisfy cloud chasers
• [X] Panel, battery, atomizer not included - base price is just the mod
• [X] Long-term wear - nylon 3D prints can show shine and wear over months of use

TL;DR: For vapers wanting to try the Boro system without spending $300+ on an authentic mod, the SXK 3D-printed mod with DNA60 chip offers unbeatable value. Accept that the finish reflects the price, and you'll get a lightweight, DNA-powered Boro device that performs far above its price tag. SXK 3D Printed Mod ->

MTL RTAs - "One of the Best I've Tried"

Our customers have tried dozens of MTL RTAs, and some consistently rise to the top.

*"amazing RTA, one of the best for mtl"*

- Joon, Apr 4, 2026

*"Perfect machining, threads, and O-rings Great mtl RTA, still one of the best of the 30+ I've tried."*

- Mich, Mar 27, 2026

*"Very tasty Rta. Fantastic machining from Yftk"*

- Anto, Mar 10, 2026

*"IMO a very good RTA. No leaking. Good flavor. Lots of airflow options with all these pins and easy to setup. I can fully recommend this atty !"*

- Paul, May 25, 2026

*"Much better than FL Dvarw"*

- Anto, Mar 10, 2026

Specs to look for in a quality MTL RTA:

Across reviews, these brands consistently score high: YFTK (machining), SXK (value), Radiator (airflow innovation), and genuine Flash E Vapor (design legacy).

What Our International Customers Say

2FDeal ships worldwide, and our reviews reflect a global community.

Turkish customer (Saha) - 6 reviews in May 2026:

*"Cok guzel urun cok sevdim"* - Great product, loved it

*"Cok sevdim hic sizdirma yok tesekkurler"* - Loved it, no leaking, thanks

*"Cok iyi anlasilir ayarlar mtl de uzun kullanim gayet guzel."* - Very clear settings, great for extended MTL use

*"Cok guzel bogaz vurumu da guzel zaten bilinen bir firmanin mukemmel atomizeri."* - Great throat hit, perfect atomizer from a well-known brand

German customer (Jens) - 2 reviews in April 2026:

*"Verarbeitung und auch Geschmack ist erstklassig. Und steht dem Dope RBA in nichts nach. Lieferung war gut"* - Build quality and flavor are top-class. On par with the Dope RBA. Delivery was good.

German customer (Simo) - 6 detailed reviews across April-May 2026:

Praised machining across multiple products - RTAs, bridges, mods, tanks, and drip tips. Constructive on some 3D print quality and button feel.

What We're Improving - Transparent & Honest

No store is perfect, and we value constructive feedback as much as praise. Here's what customers have pointed out and what we've done:

Refilling difficulty (Radiator RTA)

Feedback: "sadly the refilling is not simple, you have to unscrew inner air pipe"

-> We've added refilling notes to the product description so you know what to expect.

Shipping times

Feedback: "the shipping took a while"

-> In 2026 we've added faster tracked shipping options and optimized warehouse dispatch from both China and German warehouses.

Missing air pins (Bridge kit)

Feedback: "the 3mm airpin was missing, replacement took weeks and came as 2mm"

-> We now double-check all multi-pin bridge kits before dispatch.

USB-C charging limitation

Feedback: "USB-C to USB-C won't charge, only USB-A to USB-C works"

-> Charging specs are now listed clearly on affected product pages.

3D print quality

Feedback: "sidepanels aren't flush", "fire button is loose"

-> We've communicated this to the manufacturer; newer batches show improved tolerances.

*"The items are authentic. the shipping took a while."*

- Mark, Apr 7, 2026

*"The machining of the drip tip is not great but I have spare pawn drip tip so it doesn't matter to me."*

- Mark, Apr 10, 2026

Reviews by the Numbers

An analysis of 40+ customer reviews from February to June 2026:

Key takeaway: 2FDeal customers consistently rate product quality (machining, flavor, airflow) very highly. Our main areas of improvement are in convenience factors (refilling ease, charging details) and shipping speed - all of which we're actively working on.

Ready to Join the 2FDeal Community?

Whether you're a seasoned MTL vaper, exploring Boro bridges, or trying a 3D printed mod for the first time - real reviews from real customers confirm that 2FDeal delivers authentic products at competitive prices.

See what thousands of customers are saying:

-> Read All Reviews at 2FDeal.com/Reviews ->

*Have a product you'd like to review? Leave your feedback on any product page or visit our Reviews page. Your experience helps fellow vapers worldwide make better choices.*

*All reviews above are real customer submissions from 2FDeal.com/Reviews.html (accessed June 2026). Product specifications sourced from manufacturer pages, forum reviews, and community feedback. Names and review dates are shown as submitted.*