Peter,

If you guys are used to flying a Zagi, then your doing pretty good. Not having flown these exact planes, (worldstar) I can't give you a really good answer. All I can tell you, is that the "stick'' models usually have the wing mounted closer to the thrust line, and roll and do general aerobatics a lot better,even though it looks similar to a trainer. Usually the control surfaces are a little bigger than a trainer's too. If you keep your wing loading down around 15 to 18 oz. per square foot, the "sport'' model would be my next choice.(It definately looks a lot better!)
I don't really think that you'll be disapointed with either model, so the choice is yours, if you have to you two can flip a coin and get either, then modify as you go.
Hope I've helped, not confused.

Jetts