Yeah I was surprised how good the production on XXX was. It hits a million different spots in surprisingly great ways (Grime, MF Doom weirdo stuff, ATCQ sounding at some points even, Trap). The album is all over the place in terms of production but the way the album is sequenced you barely notice going from song to song, and Danny Brown somehow weaves through each beat like a fucking pro, his flow never getting boring, and his punchlines (mostly) never coming off corny, and towards the end of the album when things get serious, you hit that point so gradually that it is so easy to take seriously and not say "yo wtf when did this shit get sad".
I agree with PD. XXX, GKMC, and Covert Coup are probably my three noms for classics in the last couple years. Covert Coup is mostly production and Spitta's good flows, I don't find him very interesting at all. I don't like any other body of work he's put out, actually. But I can listen to Covert Coup and enjoy the fuck out of it, and it's over before I know it.