Dennis,
Depends on the application and crank work. Al Ferraro and Tom Schaefer get tremendous performance out of theirs. They use Scarinzi's timing from the Blitz article. They are also protege's of Larry's. Best speed performance is with an 8x8 APC. Depending on Nitro content I have used a 9x6, 8x6, 8x7, and 8x8. we used to use Top Flite 9x7 wood years ago as well. Usually launching slightly rich and letting it unload in the air. I've added a video of me flying my Super Satan at 118 mph on 10% powermaster. Also look for Al hitting 129mph on my you tube page.