This one is hard for me because there are so many good tracks, and it's hard to put it all in one definitive list but anyway -
In terms of lyricy, clever lines and nastyness -
2) Lupe The Killer
3) Absolute Freestyle
4) Dynasty Freestyle
5) Kick Push Pt. II (og beat)
7) Dead Presidents Freestyle
8) Mass Appeal Freestyle
9) Twilight Zone
10) Kick Push for timelessness.
^ No order other than Failure. It's so debatable though, Hurt Me Soul, Ghetto Story / Coulda Been for realness, etc.
In terms of SICK flow -
3) Knockin at the Door
4) Go Go Gadget Flow / Don't Get