So you're more interested just in the art rather than stories? In terms of just sheer art, I would actually look at the TF manga... but for TF comics outside Japan I think the E.J. Su is the best of what's out there atm. I also like Guido Guidi although I found his AHM work kinda disappointing. Most of them are reasonably decent (though I'm not a fan of Ruffolo), so it's a matter of taste. Go browse around your local comic store and see what you like. One advantage of Western comics vs. manga is that they're not shrink-wrapped (although that can also be a disadvantage from a collector's POV).
