I have owned a DP Ultimate and presently own a GP Extra. You couldn't give me anything DP for double the cost of my GP Extra. Very solidly built, flys like a dream with my MDS 2.18. I think all of the GP Extra guys are out flying their planes and might be a little busy having a blast. The Oracover on my Ultimate was just awful and loose. The monocote on my Extra was nowhere near as bad.