I've come across some rreleases from Fifth Era/Hellfire records.

This is some of the best minimal hardcore tracks I've ever heard.

However searching the internets for more doomcore stuff has brought up the predictable EBM/Goth/Darkwave crap.

And the dark gabber stuff doesn't have the ambient quality as something like this:

http://www.youtube.com/watch?v=17xx7QyqQ0c

I've searched and searched and can't find anything