The highlights among this month's roundup of rap albums include Killer Mike's fantastic collaboration with El-P, R.A.P. Music, as well as El's own Cancer 4 Cure. For better-known titles, there's Future's Pluto, which has gotten a surprising amount of critical acclaim (at least from those who fetishize regional rap trends), and E-40's mammoth three-disc set The Block Brochure. Nicki Minaj's Pink Friday: Roman Reloaded and B.o.B's Strange Clouds typify rap fans' ongoing discomfort with the genre's increasing poppiness. All in all, it's a mixed lot with many pleasures and controversies to be had.