Hmm, let me think here...there are of course, the coldwave peoples. Chemlab and the like. I'd say get 16 Volt's new album Full Black Habit. It's pretty durned aggressive. After that, Christ Analogue's Everyday is Distortion and The Bitcrusher Remixes are also very good.
Oh, and the earlier I, Parasite albums Horseslayer and Turin are right up this alley; and his latest, On This Cold Floor is aggressive in parts, unbelieveably heartbreaking in others.
What else can I throw out in good faith? The new Noise Process disc, Endif's Meta, Acumen Nation, Cyanotic, Stromkern...there's more, I'm sure, but I'm blanking. I'll post more later.