Most underrated : Juice
He's really lyrical and his flow is tight. I dunno how many of u have heard of him but hes truly a gr8 mc and he even beat Eminem in a battle way back be4 em got signed. Check out his album 'Tip of the iceberg'.
Most Overrated : Tupac
True, hes contributed a lot for rap but when people make him out to be the g.o.a.t u have to say thats hes overrated.