If I had to narrow it down, it would be metal, real metal, not like a7x or the devil wears prada, those guys can play, but that ain't real metal, check out evile, warbringer, enslaved, dark funeral, etc. Non mainstream, although some stuff on the radio is alright, dubstep, again done right, Fuck datsik btw, all he did was make popular the use of the "wobble effect, anything eighties/70, honestly dig everything as long as its good music