It doesn't get any darker or more sinister than Das Muster. This is the most evil electro I've ever heard, and I love it. Found out about Das Muster from the SOM compilation 4, track title: Massendynamik. One listen and I thought I was being possessed by electric demons. DAS MUSTER
I love DMX Krew. Pioneer of electro both old and new. I like the old breaks, but absolutely love the dark experimental electro tracks. Collapse of the Wave Function is one of my favs. This is right up there with Dopplereffekt, Gesamtkunstwerk.