right now the hot shit is the hex by tech itch, try getting the urban revolt ep's 1, 2, and 3 on outbreak, and guntalk by ewun on barcode is definatly gonna make even the pickiest fucker dance. those are the mainstream tearouts right now.
audio-the warrior and the serpent
logical & denix-dooms_day
resonant evil - number of the beast
corrupt souls - skullfucked
exile - the forever endeavor
Sta & Paul B - Zeroes & Ones (Sunchase Remix)
some darker favorites...
man decoy is so f$#king dark. probably the most pronounciated kick ive ever heard.
resonant evil - black zodiac
source direct - exorcise the demons album (darkstep, something you dont come across very often anymore)