Yes, extremely! My favorite is Gods of War, though you cant go wrong with any of their material.
We must also realize that black metal, in its infant stages, did not have a set ideology, so to speak. That all came later. Blasphemy I think made their music more primal in response to black metal's newfound "intelligence".
Er, wrong. The Blood Upon the Alter demo came out before all the what you call "newfound intelligence" of black metal came out. Gods of War blows ass dude. Best Blasphemy, and only good Blasphemy is Blood Upon the Alter and Fallen Angels of Doom. Why do you think they are going to tour a couple of shows now and only play shit from Blood and not Gods of War--cause they know if fucking sucks too.