I second the 1/2 A gas option. Take a look at the ACE simple 400. Or in the 1/2A fourm Jeremy Chins Half Wit or the Edgling that he is kitting. All these planes are highly aerobatic and will burn up the sky in a very small area. The Norvel .061 or .074 are the ticket for both these planes. You could build any one of them for under a hundred bucks.

Just my opinion.

Rrragman