It kinda depends on what your looking for. Aerobatic? Fun-fly? all out speed demon? I have a Tower Kaos (kit, not arf) with a 46 fx and it is fast, 86mph w/10x7 prop. It is also a very stable and aerobatic airplane, but not for 3D. I does IMAC manuvers with the best of them. I also have a House Of Balsa P51 with a 25fx. It is more than a handful, if you blink, it is out of sight. The Dazzler or Uproar are good all-around performers and are too big, 48" ws. The choices are endless, It just depends on the type of flying you want to do.