I listen to their whole discography with the exception of All Shall Fall. That one did not click with me one bit. No wonder they stopped making music after it and then called it quits...
Damned In Black is really over looked, same with Sons of Northern Darkness, just cant get into ASF, but Pure Holocaust is better than the last 3 Immortal records combined.
EDIT:
One last one to stir the pot: Immortal is the best black metal band to come out of Norway.