I was in high school from Sep 87 - June 91. KRS was easily one of the top 3 rappers in that era, the other two being LL Cool J and Rakim.
I admit that Hip Hop took a turn and he started to lose his shine around 92 as the West Coast started to come up and socially conscious rap faded away.
But he still dropped heat up until 1997 with his album I Got Next. After that album his contract with Jive was up and he went independent. That's when he started dropping duds and eventually lost the battle to Nelly. He still has a cult following and can go to just about any major city on Earth and do shows.
Anyway, here are some good songs he dropped after 92