Jim Lee (Click to enlarge).
Forget Chris Claremont's knack of filling every spare space with a speech bubble or word balloon, Jim Lee's art has helped the 90's X-Men stand the test of time. As strong and as sure as Mags stands here.
In fact if Jim's new home at DC fails to chuck him on a Justice League relaunch or the Legion of Superheroes (whom Lee is a major fan of) before he hangs up his pencils, it will be one of the biggest crimes in four colour history. Can you imagine Darkseid done like this? Wowza.