I ask this because I am not HAVING mana problems per se, but I'm definitely at the point where I'm on the verge of that happening as I subtract spirit with these upgrades. I can be up there in heals, and I can even top a BG. In those games, though, I'm riding on low mana in intense fights. Every time I lose spirit, I risk being ineffective in long fights.
Back on point, Noxxic says:
Crit > Spirit > Haste > Mastery
Can Someone explain why crit is so valuable?
An Example of some of the choices I can make is buying a 476 belt with Crit and Mastery, and I reforge mastery into Spirit.
I can buy a 476 belt with Spirit and Haste, and reforge the Haste into Crit.
Some spells make it impossible to crit, Like Denounce, so I am afraid of stackign it so high and facing holy paladins who do this.