I agree with the T-34 Mentor. Should not be a bad second plane.

Let me also throw out the Dymond Models Tiger Moth if you might want a bi-plane. It flys almost identical to my four star 60. It also looks much better in the air. Very easy on the ground. Floats on landings. Slow fly-bys at 1/3 to 1/2 throttle with a magnum 60 four stroke look and sound great. If interested it can be found here: [link=http://www.rc-dymond.com/Gas_Glow/60026Tig.htm]Tiger Moth[/link]