I listened to Son Lux's Weapons and Break and it's really not my thing. When I read "avant-garde hip-hop" on anticon.'s Wikipedia page I was expecting something along the lines of Dälek or Mike Patton's Peeping Tom.

My favorite label at the moment would have to be Southern Lord. Not only do they have some great artists, but they truly pay attention to quality. Their vinyl releases often come with deluxe gatefold jackets and other goodies; my copy of Boris' Pink came with blotter paper.