Spec: I flat out hate Ultima's spec but if it works for him thats good. I on the hand I do not plan on tanking, being attacked by adds, or standing in fire for very long.
Here is mein:
http://www.wowarmory.com/talent-calc.xml?c=Priest
With Ultimas spec IMO there are a lot of waisted points. Things such as Healing Focus, Spell warding, Desperate Prayer, and Blessed Resil are all well and good for PvP survival buit really do little when it comes to Healing a raid. Yes those talents may keep the damage off you a little bit but you are not brought to a raid to keep only you up. Those talents do nothing to keep up the other 9-24 people. Lightwell and Body and soul are nice, but picking them both up is just sacrificing way to many points of healing throughput in other areas that are used far more often. Fopr example: his 2 points in Blessed Resil give only 2% increased healing to all heals. But if he had put those 2 into Empowered Healing he would have gained 16% increase to Flash and 8% to binding(which also acts as an even better Desperate Prayer).