So we are talking New X-Men vs Astonishing X-Men? Morrison wins that battle, but if we are allowed to sub in Ellis run on Generation X or X-Force or even Wolverine in place of that abysmal Astonishing run, he wins.
I should note that I don't think Morrision's run on New X-Men was particularly good, and I like it less and less every subsequent time I re-read it, but Ellis' Astonishing run was a mess.