Synth, you have good taste in Hip-Hop so I think you'll like these guys if you haven't heard of them.
They're a group of teenage skateboarders from California, who hate hipsters who wear tight pants, Kid Cudi, and "40 year olds rapping about gucci".
The main attractions from here, are "Earl Sweatshirt", and "Tyler the Creator". They both have LPs out, their lyricism is very dark, and disturbing, for their age they make dope tracks. They produce their own beats.
Here's some songs from Tyler' the Creator's LP called "Bastard". Earl is on this first track, he's the younger guy, the deep voice guy is Tyler, he's 18.
http://www.youtube.com/watch?v=SiiqqBw47HU
http://www.youtube.com/watch?v=YSjzdTBOWFc
These tracks are from Earl Sweatshirt's album: EARL.
http://www.youtube.com/watch?v=39BwYLiKHDA
http://www.youtube.com/watch?v=US8uBSCtQKg
Let me know what you think.