Currently im leveling it as Holy, and surprisingly its pretty quick. Not as quick as shadow i imagine but still very mana efficient, and do a fair amount of damage.
The build im using at the moment is: 14/48/3
By 80 i will be using: 14/54/3
Then i will probably re spec to disc for some PVP and Arena action.
Seems to do fairly well at the moment in standard PVP, although i do get hit pretty dam hard.
For grinding Mob's i usually use: Smite, Holy Fire, Smite, Smite, Wand. And trinket up whenever there not on CD.
If i go hard on the mobs i can take down about 20 before drinking. Just sux a bit when you have several hitting on you and there immune to fear.
Here is a more comprehensive guide for leveling a pries and gear etc that i found a while ago at dwarfpriest.com
Last night i hit 74 and im still in Borean Tundra, Leveling as rested is so much ezier than doing it without!
