Not too sure. Toxic suddenly got amazing over night, I remember his first GFX, and now the shit he's puttin out, they're really great. I must admit there's somethings he does that i don't know how to do.
Steph is the same deal, she's really blossomed as well. Only qualm I have about her work is that the colors are too basic and bubbly, but other than that, the work is great.
Kry also has some great shit, very dark stuff, and I like that. But he needs to mix it up, alot of his peices are almost the same.
MJB is another dude who suddenly got the hang of it, and he makes some good shiz, however I haven't seen much of his work lately.
Composure, this dude is art minded. I really like his typography the most.
But I gotta give it to Niko, me and the man have a long history together in the GFX dept. And he makes some really good work, really fast.
And let's not forget B-Real and T.B, old school GFX artists.