I HAVE flown both. DP demised from god knows what, but it died after only about 15 flights or so. About that many flights on the GP PW Extra.

So far, the DP felt "lighter" on the sticks. But was much faster (not what I liked) than the GP. The GP, I think, is slightly more scale outlined, and seems to fly just fine.

Comparisons of which one is better....well...they both had their strengths.

I'd say this - owning both - I'd have another GP PW before another DP....it just seems more solid in the air...and is more suited to my "OF" style of aerobatics. (NO 3D)