Hands down, IMHO . . . The Prowler.
Designed by Bob Hunt and once kitted by Aerosmith Model Aviation, it was/is the best flying profile I've ever had experience with. I've been flying one in Expert Stunt for the part 3 years, winning once, placing usually, and never too far out of the money.
It's two big advantages are:
Foam wing, so getting it straight is a no-brainer.
Small size - 490 sq in, so a light case 40 (Brodak, FP, etc) pulls it with extreme authority. Great wind penetration, and it builds light, too.
A request on this forum might just turn up an unbuilt kit, or a set of plans.
Johnny Duncan can cut a foam wing for it, too.
I can't say enough good stuff about this design. You can't go wrong with one.
Rick Campbell
Steve