I´m running a dual priest/priest team and i´m finding it insanely good. Both are disc/holy and i can easily take on elite mobs and 2/3 guys in pvp. "/castsequence reset=8/combat/target holy fire, mind blast " is the only macro needed for leveling, cause it has huge mana efficience and will tale mobs down to 5-10% health at the most (without critting). I usually end up a battle with holy fire on cooldown. Holy nova can be used for aoe farming, even without bubble, but once your mana is gone, you´ll be also gone. Looking forward to BC content to see how better they will get (pre-bc is terrible for caster items)