Any good underground rap artist?

I've been tired of mainstream rap for a good minute now. i haven't listen to the radio in about 4 months now and the only time I really hear it is when I hit the club up. I'm a fan of all coasts and a big variety (lupe fiasco, the game, wu tang clan, chamillionaire, 36 mafia to name a few). Outta the people that I like I've bought (not burned, that's stealing) pretty much most of thier stuff and need some new ideas. any suggestions?