I'll jump in the best I can here. The 2.2 is a more than capable airframe up to and through Masters. There are things the 3 does better, but at the same time, the size of the 3 takes some getting used to. If you dont want to buy a VF3 kit, and want to scratch build one, then build the 2.2. The changes that are made with the rudder area and such do make a big difference. The VF3 is really designed for the upper classes. It will fly the lower classes well also, but certainly not needed for the AMA classes,

Hope this helps,

Arch