What is some good intelligent Hip-Hop?

I currently listen to artists like Biggie Smalls, Pac, Pun, Big L, Vinnie Paz, Krs1, Immortal Technique, Talib Kweli, Mos Def, Masta Ace, etc. I am looking for informing and intelectual hip hop by these artists or others to expand my collection. I also like political hip hop.