Out of curiosity.. would it be easier to do a backflip with a bigger heli or a smaller heli? Would it be easier to do a backflip with an Align Trex 150 or an Align Trex 450? If I crash the 450 it would cost more to fix but would it be easier to do a backflip with the 450 or 150? From people having experience with bigger helis and smaller helis which do y’all find easier to do 3D with?