not who you think are the best 3... who are your favorite 3? for me its...(not in any order)

1.xzibit- to me his old stuff is very under-rated

2.inspectah deck- his lyrics are incredible sometimes and i really like his style

3.del the funky homosapien- dont need to say much here...great lyricist

on here it says that crt's need regular maintenance, what type of  "maintenance" would this be exactly?