So Sayeth EJ for Holy Priest gearing:
1. Get as much Intellect as you can through higher item level gear.
2. Make sure every item has Spirit as a secondary stat, and gem/enchant/reforge for enough spirit to feel comfortable.
3. Get enough Haste to have 12.5% raid buffed.
4. Stack Mastery.
5. Avoid Crit, which has the worst conversion factors, and is devalued further by our talents to increase it.
Enough spirit to feel comfortable? What the EFF does that mean? Elitist Jerks is supposed to hand over the maths, not this new-age touchy-feely crap.
Rhii was easily keeping up with tons o’ mana. Clearly, she had enough spirit to be “comfortable.” I was floundering with OOM. I was decidedly uncomfortable – but thought that it was just the way cataclysm IS.
Then husband cut me 3 (+40) spirit gems. Holy. Shit.
With that small bump, I went from perma-oom, to being COMFORTABLE. Sure, I conserved mana still, but I no longer worried about pulling out the big guns when I needed them. I didn’t have to drink-to-full after every pull.
I don’t know what the magic number is. I only know that there is a tipping point, and it may not take THAT much gemming or reforging to reach it. One minute, you’re definitely NOT comfortable with your regen, and then not-too-much spirit later, you can hit the “magic” threshold, and suddenly feel closer to “normal” again.