11+/11/7 was my spec leveling to 60.  I was constantly LFG and pugging, and in the time in between questing.  I found that build provided the most versatility, in any situation.
I had improved Shadow Word: Pain so I could DoT and wand/regen mana to eliminate down time.
Improved Renew and Holy Nova for AoE.
Disc talents to increase efficiency and regeneration.

With that spec, I was able to both solo and group well, and it payed off, with leveling to 60 in 14 days (played time)

I was leaning towards PI Disc / Holy because of my previous leveling spec, but leaving out the shadow talents because I don't have nearly as much spirit as I did leveling (300+ at 49)

I was looking at 34/17/0 32/19/0 or 31/20/0 for a spec (cant link at work  :roll: )
PI at the top of the Disc tree (with mental strength and agility)
Searing Light in the holy tree.
My current debate with this spec resides on where to put 3 points.  Here are my choices:
3 Divine Spirit (improved)
1 Divine Spirit 2 Holy Reach
2 Holy Reach 1 Improved Healing 
3 Improved Healing.

I'm currently leaning towards the 20% range increase of Holy Reach and 1 Improved healing at the moment, considering the range increase lets me get another spell off before I start getting pounded on, and reduced cost of heals is always good.