Hi, I got the toptank mini and it is really nice, however the building deck is rather small but good enough to me. I am a mtl vaper so I build 26awg ,75-1 ohm, wattages between 7.5 and 10watt. It is a good rta, but fragile for it's price. I Let it fall and the aluminium threadings for the 510 connection were bended so it touched the centerpin and shourted, I was able to bend it, now it works again. Also the glass did break only once in 9months while I did Let it fall multiple times. I still like it alot, but maybe want another rta cause I wanna to try bigger builds, More space in the deck, ...