Yeah, like I said - I usually like my black metal mixed with something else and the "pure" bands I really like are probably only Satyricon, Darkthrone and Immortal (and you could argue about Darkthrone being "pure", at least taken overall), since Anaal Nathrakh is also mixed with death/industrial/whatever.
You could say I'm not prepared yet - with death it was this way too, at first liking only the prog- and whatever- tinted examples, like latter day Death, Opeth, Atheist... and suddenly I was full into Suffocation, Obituary, Nile, Psycroptic...
It's funny, though, because at first I couldn't stand melodeath and listened only to the regular death, however today it's more like the other way around. Well, no, I don't hate regular death now, but I don't listen to it that often nowadays.
I think I can definitely confirm I dislike Mayhem - I can't stand Csihar's vocals for one and the material isn't something I'd die for. Burzum have been hit and miss too. We'll see.