I'd go for a Thunder Tiger .46 Pro over the GMS..... for pretty much the same price.... You'll find far more users (which equals more help onthe engine) and a better engine.....It will be perfect for those trainers..... If you want to spend some extra money I'll agree with Razor that you can't go wrong with the Irvine!

As for your Cap.... You could use either of those twp strokers.... but If ya really want good aerobatic perfpmance get a Saito .72.....It's more money but it's got a bgger bang too.... Don't waste your money on a used Saito .65 (since they don't make them anymore and they're heavier and less powerfull than a .72)