I still play No.3 by RND Technologies, simple but so ****in effective.. some of the tracks from Beyer's "Protechtion" album are supreme, and yet to be bettered in hard techno in my opinion. Lekebusch's early ones (4 + 10) were ace, and there were other random ones here and there that were good too. No. 20.5 (Remainings III - DK mix) is probably the biggest selling 12" on Drumcode... it's a good one too.

Lots of good ones in the Code Red series, the first release "Wood Carver EP" by Thomas Krome was cool when it came out, it really put him on the map at the time, although for me it was that crazy distorted track on DC 06 with Beyer that had already sealed it :)