Billow v2.5 RTA by EHPRO & Eciggity

I loved the v2 for the tiny chamber, full flavor, and sleek look. I liked the v3 for the juice control, velocity deck, and top fill (even if I hate the pop-up). When I saw the v2.5, I knew I was in for a treat. The reduced chamber with sleeve, while a total pain to wick, makes for amazing flavor. Even with standard round wire 2.5mm spaced coils it blasts concentrated flavor. Throwing in some 28g/36g nichrome80 2.5mm clapton coils make this thing a total flavor monster. Having the sleeve around the deck makes it easy to check the state of the coils and wick without worry of disturbing a working build. The top-fill is a nice screw-on instead of the messy pop-up of the v3. The fill holes under the cap are HUGE. You can easily just pour from the bottle to fill. The juice flow control has been vastly upgraded from what was on the v3 and serves two purposes while performing the same action. First is to close the juice flow off, as expected. The second is to keep the juice from pouring out the bottom of the tank if it is unscrewed while upright. The act of unscrewing the tank seals the juice ports, even when it is removed from the deck (unlike the v3). All threads are buttery smooth, and have no problems catching to screw in properly and the tank was immaculately clean when it arrived. Just a quick rinse in scalding water and off it went. Overall, this is an amazing tank, and what the v3 should have been. A worthy successor to the v2, and worth every cent if you're looking for a rebuildable tank that produces some of the best flavor.

The Billow v2 is my favorite dual coil tank, period, and so I've been very excited to try the 25mm version. Something to note: the air holes on the outside may appear bigger, but the airholes on the deck are the same size as the original V2. The 2.5 feels and vapes exactly like the original. The improvements, however, are done just right. The juice flow control opens by fully screwing the base into the tank, and closes by unscrewing the base a little bit. You can then fill the tank through the two massive holes in the top, eliminating any seepage from the threads at the base that you'd see on the original. This is extremely convenient when filling from the top, and I haven't experienced any leaking after filling this way. The tank also holds 1ml more than the original 22mm version, meaning you don't have to fill it as often (YMMV). Flavor is just as good as the original. You get a smooth, non-turbulent airflow that provides excellent flavor at lower wattages. I run a 0.5ohm dual coil in both the new one and the original, and the flavor is great in both. I use the 510 drip tip, not the wide bore, and it fits nice and snug on mine. If you are expecting to fit Clapton's and alien coils in this thing, you will be disappointed. This tank is made for 2.5mm - 3mm round wire coils, and it vapes great with them. TLDR; It's a bigger, easier to fill version of the V2. The vape experience is exactly the same.

This is exactly what the Billow v3 should have been! I'm quite impressed with this tank after just a day using it. Flavor seems to be spot on, no leaking, no press fit areas that cause unnecessary weeping/seeping, easy to fill, easy to build! The only one issue I can see people not caring for is that the build deck, yet easy to use is pretty limited to what can be used as far as coil diameter. My first build I did 3.5mm ID with 26g 316L SS and it was extremely tight once I got the wick installed. It did seem to cut off the wicking a little bit because of the cotton being smashed against the side of the barrel so I dropped down to a 2.5mm ID and that works perfectly. The second drip tip fits very loosely as well (the non wide bore one). I believe this is because of just having a single o-ring. The description says 510 drip tip adapter preinstalled, but I don't really see it being used very effectively for that since it fits so loosely. Other than those 2 minor gripes I feel like this will be a very solid tank for my daily rotation! Looking to buy at least a couple more!!

Been using for a couple of days and oh boy this thing ROCKS! No leaking issues, flavor is just fantastic, big fill holes, you can literally dump a juice bottle from the top fill hole it's that huge and easy to build Velocity deck. What more can I say other than great job on the improvements.