Hi everyone.
I want to share.
I've been leveling a diesc priest for 2 weeks, right now it is a level 33 troll, and my gear has spirit all over.
My build so far:
http://db.vanillagaming.org/?talent#bVMusfmk
It's being a painful experience!!!
My problem is that I wanted to be full discipline so I'm lacking of the Spirit Tab talent. Every 2-3 mobs I need to drink.
Killling mobs is very slow paced. What I do is PWS, HF, MB, SWP, then use my wand to finish the mob. It takes 2 PWS to kill a mob. It feels like my wand gets outdated every 5 levels.
My mayor problem with healing is that I can run out of mana easyly and although I have the talents to regen at this level they are no very useful imo (all my gear has spirit, 156 point not buffed).
So regarding healing, and that discipline doesn't boost your healing, I think a Shadow Priest would heal almost as well as a Discipline while leveling.
PVP wise I am normally an easy prey for Hunters around my level, I can kill the green-level ones though. My shield can stand against rogues, I normaly manage to either use two shields and flee or two and then die. I've beeing able to defeat most warriors.
So I'm going to try to level to 60 still as a DISC, with some talents from Holy that boost damage. I'm doing this not because it is the best way to level, but because it is a good challenge.
So hopefully I don't get mad in the comming weeks and respect to shadow or just level that warlock instead.
That's my experience if it helps some other doubtful Priest in someway.
Pardon my English & Cheers.