You guys wouldn't know a great airplane if it bit you on the butt!
the best is a Goldberg Chipmunk w/ K&B 65 turning a 13/10 prop( the original engine with the deep head fins) A Pica Aeronca Sedan w/ O.S. 90 four banger, A Balsa USA nieport 17 (1/4 scale) w/ g-26.