Wow, great clues!!! Really narrows it down!
Solo - Volume 10 "Hip-hopera" (this is probably only for me!) OR (again, just for me) Saafir "Boxcar Sessions" - look, there are so many solo rappers out there it could be anyone!!!
Duo - Organized Konfusion "Stress" with their S/T album as an exclusive!!! Again, this clue has so many possibilities!
4 person crew - Gravediggaz "6 Feet Deep" but if Freestyle Fellowship "Inner City Griots" wasn't just reissued that would be my first choice....
I can't wait to be underwhelmed!!