Thanks for the info guys. It sounds like maybe the DP is a better plane. I've seen alot of complaints on here about the DP extra having a problem with aileron flutter. Is this really a problem or did those guys just overpower their plane and fly too fast? I like the looks of the Dp extra but I wasn't considering it because of the problems I've read about. What is the best engine for the extra? Is it really any lighter than the GP extra?