Your decision has a lot to do with your definition of "nice aerobatic plane". The fun 50 is good for sport aerobatics including rolls, loops, and the like. The CAP is typical of good aerobatic design and will do all the aerobatics plus some decent 3D with the right engine. The Saito 82 would be an excellent choice with more power and less weight than the 72.
Several club members have flown the Twist (me included). The plane flies well but has a very weak spot in the fueslage around the wing trailing edge. Does 3D ok and is terrible at most aerobaitics if attempted to fly precisely. Loops are particularly nasty with the tail heavy conditions evident with the tail mounted servos. Take a look in the 3D, pattern and IMAC forums to see what is being flown and for additional informatin. Good luck with whatever your choice is.

EXCAP232