Much saccharine. Much near-djent/'progressive metal'. Much 'spacey atmosphere if your idea of space is a tacky sci fi film'.
I don't think their music is especially bad, but they don't do 'atmosphere' nearly as well as Darkspace. And if I wanted spacey atmospheric BM that was a little more riffy than Darkspace, I could just go to Zhaaral's side project.
http://www.youtube.com/watch?v=F7k7PwKJLHs
The keys (and guitars) are much more constrained. This is a good thing. Alrakis does it okay. Forest Silence and Midnight Odyssey too.
I'd like to find a black metal band that could pull of space ambience as well as... 'Space ambient' artists.
Something like Darkspace or Paysage covering bands like these
http://www.youtube.com/watch?v=UGPQ37NVdvA
http://www.youtube.com/watch?v=YE9RPDgCn2w