Reverend Bizzare tends to cover a broad range of doom/stoner/death on their albums. The EP (72 minutes) I have has slow doom, death doom, and some stoner metal all on the same album. They are really becoming one of the rising stars in doom. Overall, I would call them a really heavy Cathedral/Sabbath hybrid. They covered a Burzum song, though. So that tells you they aren't your typical traditional doom band.