Hiero is underground?
Also, check out living legends if you like hiero...
Murs, eligh, grouch, and others... Good stuff...
I'd definitely call 'em underground, at least compared to Lil Wayne and 50 cent and whoever else. Totally dig Living Legends and Murs, I'll have to check out the others.

When I play that through the system in my shop my socks slide down my ankles and things rattle off the shelves.