all those "street album" rapper mixtapes are highly disposable with very few exceptions (Clipse Got it for cheap series, Kanye's early stuff: I'm good, Kon Louis Vuitton, and can't tell me nothing, Fab's Soul tape series, J Cole Friday Night Lights)

Now an actual skilled DJ mixtape, those were the foundation of hip hop. I was a Tony Touch fiend back in the day, and more recent stuff like Neil Armstrong and J. Period