Mirror park was okay at times, so was non-stop pop with a few of the tracks. I really dislike the entire radio collection. It's an unimaginative collection of D class pop music. All the radio stations are pop, and they suck. IMHO Sure there is some rap, but it's the pop kinda rap. GTA V radio FAIL
P.S. I couldn't believe my own self, but for the majority of the game I kept the radio off.