I've only recently gotten into extreme metal, but I'm glad I did; it's more cathartic than most music. The only Black Metal artists I listen to much at this point are Dimmu Borgir, Bathory (although I'm currently more taken by Blood Fire Death/Hammerheart/Twilight of the Gods/Blood on Ice/Nordland than the strictly black metal stuff, although Under the Sign of the Black Mark owns), and Enslaved; I've also been exposed to Opeth and Edge of Sanity recently in the death-metal category, and it's something else.