Disc Priest

http://www.ownedcore.com/forums/world-of-warcraft/world-of-warcraft-bots-programs/329033-beta-pqrotation-automated-ability-priority-queue-183.html#post2149707

I've been using this one and it works pretty well! It does leave a spell "activated" and you have to cast a greater heal to avoid having the whirring noise when you're out of combat, but I haven't had time to figure out what to do to fix that. Have used it in DS normal and the new 5 mans, 378 ilevel, and mana has been good and heals have been great.