Well, I was doing around 80k dps on last 2 bosses of HOF and first 2 of ToES...
I set my build a mix of haste/mastery...
Well.. I dont have numbers yet, but I improve haste to improve mana regen and I dont get OOM anytime..
Was using rune of power and I glyphed Mana Gem to help it.
I've noticed that Arcane Barrage is stronger than Arcane Missels. So, fish for AM isnt a good choice.. We have to cast only 4 AB now (note that haste help this phase as well) so keep casting FFB or something to proc Arcane Missels sounds stupid. And, Arcane Barrage seems to me, the best spell to proc missels, so I can start a phase of ABx4 with one missel ready to use, and with 4 Arcane Blasts, I may proc another and my dps is a boom..
Aw, I was using Nether Tempest... I May be wrong but it helps a lot to proc missels when u refresh it.