RE: Jet trainer
I'll jump on the skip DF band wagon. Get yourself a Baby Boomerang with a Wren/P-60 or such and have a ball. If money is an issue you can leave it with fixed gear and by a used engine. Mine had all standard ball bearing servos and simple spring air gear. After standing up to my abuse I sold it to a club mate and now he's thrashing it. Flies like an over weight ultrasport.