According to the GWS site the Spit has an all up weight of 12 to 14 oz's. So just about any of the brushless outrunners would probably fly it pretty well with a 2 cell lipo. If you really want high performance get a more powerfull outrunner & a 3 cell. You'll pay a little weight penalty with the 3 cell but it will provide more power for a stronger outrunner. Hope this helps, but if you want some real good advice as to the very best set-up, move this thread to the electics forum. Those guys know this stuff much better than I do.