there seems to be a fairly tight knit community of a few artists incl. BSE from what I've seen/heard. Eye-D is another man you wanna look for. If you go to the Eye-D site, in his links section there's about 10 artists that all run on a similar vein.
Check out artists like Plejik, Rawthang, Kemal, Subwave, Cause 4 Concern, & Impulse & Submerged. Also labels like Black Sun Empire, DSC14, Protegen, Ohm Resistance, Outbreak, C4C, Penetration, & Renegade Hardware are a good place to begin your journey on the dark steppers. Hope this helps