mebe this one..
http://www.wowhead.com/?talent=bxMRuhgtMcqkfZV0gz
lolol...i know crap bout priests.. 

Disc healing Priest 3v3 or 5v5 geng.

Disc surge of light smite BG geng, because u can heal and instant smite at the same time, to me;

2 sec cast Holy Fire Crit 2.5k damage prot surge of light
0.5 sec to surge of light smite 1.6k (no global cooldown)
0.5 sec to Power word 1.7k Crits happens alot in pve and pvp

5.8k damage in 3 sec is fun, it's not rare it happened quite often to me ; )

Yes, and you guys never try it out? so holy dps remains a myth? I can only tell you at 1k spell damage holy > shadow.

Just go wowwiki see how spell damage scales, the higher the spell damage the higher holy dps > shadow dps.

I'm lazy to rebate but spec holy smite (with surge of light) get on your +1k spell damage gear and go do your dailies. 3 cast (with crit) or 4 cast (without crit which is rare but it happens) to kill a BE is much faster than Mindblast flay flay SWD imho.

And yes, u can heal with holy dps build. you'll have fun smiting people in BG too, just don't try it on your 5v5 team...