Well, the production I like usually is consistent through the albums so here are my picks:
Conscious rap:
Mos Def and Talib Kweli Are Black Star by Black Star (the intro in particular) &
Train of Thought by Reflection Eternal (
Down For The Count in particular)- pretty much every Black Star affiliated album; Common's
Be (especially
Chi-City and
Be), while not my favorite Common album, I loved Kanye's jazzy production.
East coast rap:
Illmatic by Nas (especially
N.Y. State of Mind)
West coast:
all eyez on me by 2Pac (
Can't C Me);
The Documentary by The Game (
Higher and
Church For Thugs).
General: my group United Slaves' mixtape (the album is on hold right now but coming); peep
Hell on Earth and you'll know what we can do.