One thing that I am curious about, is the wing tips. I read on Ed Mooremans site a while back that basically flat wing tips performed the best.

My Laser 3D was built with the stock wing tips and the roll rate is no good when using the "expert" throws printed in the instructions. I had to add 20% to get a good roll rate.

My Pizazz on the other hand, I reduced the throws by 20% because the roll rate was so fast that I had trouble flying through snap rolls. The pizazz has flat wing tips.

I've thought about chopping them off, but I know that somebody will build one like that, and look forward to a comparison.