What spec do you dungeon and WQ spam with?
All meeh, it takes a bazillion years to cast a spell.
It gets better after 575. so choose w/ you like
You can do it with any spec, it’s all so easy right now nothing really matters.
Fastest for WQ stuff is probably Hellcaller Destro. Just running around applying Wither, Shadowburning, havoc-burning, stuff tends to fall over. Can probably run Diabolist as well, but you lose the instant cast DoT.
Dungeons are just whatever you like. Affliction is a bit stronger then Demo / Destro at the moment, at least last I checked, but none of them really compare to things like Fury and Frost DK so it’s whatever.