The DP Extra is 100% better than the H9 Edge. It is both built far superior, and actually will fly unlimited 3D and Freestyle... unlike the H9 Edge.

Having seen a video of a bog standard DP Extra flying 3D (3DBatix), my Edge instantly went up for sale, and I still have it now, really uninteresting to me.. it flies crap, won't knife egde properly, snap rolls lose noticable height (and yes i cna perfrom them... i do fly IMAC) for the Size and weight of it, it feels a lot heavier in the air, especially in 3D. My small Kyosho CAP actually has better 3D capabilities! .... the Edge weighs 12lb.

3DBatixkid knows what hes on about too.. he flies fiberclassics stuff... i'd go with his word.