I like Bill Sienkiewicz of course although he only really worked on New Mutants, and more recently I really like Chris Bachalo. Neal Adams I guess for the original run... I can't think of many other really good artists right now although I'm sure I must be missing at least another 5 or something. Obviously *not* Liefeld or Lee. In fact even thoguh as a kid Jim Lee's art seemed like the best thing ever to me, the fact I later found out he was the reason Claremont quit writing X-Men makes me never want to give him any plaudits ever for anything.