Jigga is one of the elite rappers.But Slim Shady tops him lyrically.Only problem with eminem is he's running out of subject matter and he's likely to retire after his next album despite the fact that it's only his 5th.Em needs to put out about 2-3 more albums that are MMLp,SSLP,and Eminem Show caliber to be considered the best.So as of right now....NAs and Tupac have the edge on eminem.