I'll help if I can. I can only go on what i like but here are a few suggestions.
Buy anything by Jim Lee. He's currently drawing Allstar Batman and Robin.
There is some nice art on the xmen books just now but they are rght in the middle of a big crossover.
Justice League is not bad. Good art.
Why not try some of Marvels Ultimate line. The trades are all readily available and the art has been solid in all the titles. With the first two volumes by Brian Hitch, probably one of the best artists around just now. The trades are easy to pick up.
Thers a few suggestions to get you started.