I'd like the ability to either do 3.7 or 6v with it It wouldn't matter about switching batteries to accomplish it, but I'd also like one set of batteries to last all day if possible.
Currently I'm using a Tornado / eGo or my Indulgence at 3.7v both with 510 attys...
I'm kinda unsure about the square mods, I haven't been able to feel one to see if I like it...
A bonus would be to somehow get a auto juice feeder on it LOL =)
Hands down. Infinity or Buzz.