RE: t-28-trojan
The Parkzone Trojan looks like a good flyer..... however foam does loose it's shape with heat and being on one position for too long. It is easy to repair but i don't know how "tough" it is.
I just bought a balsa p-47 with a 39.5 inch wing span complete with brushless motor, folding prop, and retractable landing gear for $134. It's doesn't come with servos or an esc but I can get all the servos and esc for about $40 to $50.
Balsa planes fly better than foamies, They are more consistant than foamies ( meaning parts don't loosen up ). Balsa doesn't compress as easily as foam.
Sure balsa is harder to repair than foam but if you need to constantly repair your airplanes, I wouldn't buy balsa. If you can fly consistantly without crashing then balsa is the way to go.
Just my opinion....but it is a good one.