I'm suprised some guys said Tool, in which you're right on, but I thought there was too much Tool-hate on this board...
As for others, I've got to say Angra - Temple of Shadows (glad to see someone else said it too haha), Quo Vadis - Defiant Imagination, Scariot - Momentum Shift (the hi's of Steve DiGiorgio's fretless are emphasised - GODDAMN it sounds thrashy), and some Lemmy too for the unmistakeable grit.
Mind you, I just like the bass...loud. Even not too flash tones can do it for me, such as on Sodom's Agent Orange and Kreator's Pleasure to Kill.