AZ. One of the most underrated MCs ever. I think he's barely sold 1 million records in 10 years. Still if you ask most rap fans, they know of AZ and know how amazing he is. His flow is just amazing, kind of a mix between Jay-Z and Juelz Santana, but with the knowledge and lyrical powers of Nas and Rakim, KRS, 2pac and many others.