Originally Posted by Snowy

For the record, I have Blackout, but it's more that I just run with the same spec for PvP and PvE. So Blackout makes more sense for me, being on a PvP server and doing Arenas. Otherwise, I think it comes down to a matter of taste. Blackout is nice for Hyjal trash waves, for example, and I never run out of mana during a trash wave that I'd need a Spirit Tap proc. In BT, it's largely irrelevent which one you have. I think the proper way to address this is just say it's a matter of taste and neither is "wrong" to decide on, with Spirit Tap having a slight PvE advantage, and Blackout more inclined toward PvP.