MC'S

Best - Nas
Favorite - Ghostface/Redman (can't choose, sue me, I listen to Redman more though)
Greatest - Jay-Z

ALBUMS

Best - Illmatic
Favorite - 36 Chambers
Greatest - The Chronic

GROUPS/DUOS

Best - Tribe Called Quest

Favorite - Outkast, Little Brother, Bizzarre Ride Pharcyde LOVED THEM THEN, they lost "it" with Labcabin though....
Outkast and ATCQ can switch spots depending on the day^ LB and Pharcyde are right behind them though.

Greatest - NWA