Illmatic, this is not close or even debatable. There's no argument. Within this list? No argument.
Me Against The World follows right after it.
Illmatic is almost universally known as THE greatest hip hop album of all time.
Reasonable Doubt, Ready To Die, Chronic, all known as top 5 albums of all time as well.
Marshall Mathers LP, great album, not even top 10. I'd say it's top 50 for sure. It's the only album I have of Eminem.