Give Zomby a shot. Jake was a big fan of his last record (With Love) and reviewed it, and he's been consistently good-to-great since he started. Forest Swords is not really too close in sound but has that same kind of "darkness" y'know? Give his album Engravings a shot (I reviewed that and it's my number 5 overall for the year). Also, Actress' LPs have all been incredible. Lemme know what you think and we can go from there - you also might want to seek out the Underground Dance Music Thread in the General forum.
Thanks guys. I've taken a listen to Actress' Caves of Paradise, Zomby's With Love and Forest Sword's Ljoss. Forest Sword reminds me of some of Akira Yamaoka's work on SH3. It all sounds really good and I think I'll check out their respective albums! Nothing quite like Burial's Fostercare or Crystal Castles's Sad Eyes though.