ar3s are great for butters and you can spin super quik on 'em. and this years thrusters really look quite gay so id go with last years if you can. i cant tell you which one cause i dont know your build or ability.
i'm about 5'1" and 95 lbs. i'm small. my ability i don't really know i cant do flips, or iverted aerials yet but im working on it. and im working on rails. but other than those i can do whatever.