HI guys, Ken let me fly his edge/DA50 at our past big bird, and I can say this edge is a winner!! Flew very precise (Ken did great setup) but for 3D, it was an animal, flew light, did every manuever, tip spins, blenders, rolling harriers, hover, everything was easy. Best 50cc I have touched to date!! The yak is supposed to fly every bit as good if not better Im told. Max wrung it out like a champ, cant wait to try one!!