I've read the guide on Icy Veins, and I've checked out ask Mr. Robot. The general consensus there is that spirit > *.
In my guild, our priest class officer disagrees completely. His recommendation is that after 9k or so spirit, you should reforge EVERYTHING except for mastery to crit and gem for crit as well.
I'm having a really hard time on Garrosh (normal). I'm not running out of mana, but in the phases where everyone is spread out for the empowered whirlwinds, I'm having a really difficult time putting out enough heals.
So who's right? Should I follow Icy Veins and Mr. Robo