Just go to www.swanyshouse.com and buy the MOJO 40 kit. It will fly easier than a trainer on low rates. Turn the rates up and you have a wild 3D machine. I've had a 4*-40. It don't 3D. I wish I would have gotten a mojo before a 4*. Plus the ST 51 will be perfect in it. My Mojo 60 is like a kite. It just hangs in the air forever. You almost have to force it to land. Prop hanging is a breeze. I'm learning fast and not that great of a pilot. Flat spins are the flattest and decend so slow I could land doing a flat spin. ha............JUst my .02