As far as an RTA that will meet your expectations, I have to suggest the Cthulhu. I have gone down the Lemo and Lemo Drop and Lemo 2 route. They are good tanks, the best of them most likely the drop. The Cthulhu though, what a beast of a tank this is. True dripper like performance and flavor. I am not a pro builder and even I can get this thing to work flawlessly. You hear people say the Lemo issues are "user error" and "once you get it right" it works good. With the Cthulhu, it's hard to get it wrong, the darn thing just works, and keeps working. Super easy to fill, NEVER leaks and can fog out you house in three puffs. I haven't picked up my Plume Veil in over a week. Just watch a you tube build video first as there is no user manual included in the Cthulhu package, and you're off to the races. Just carry around 30 Mils of juice with you. It does like to suck down the e-juice quick!