Just reached level 60 and have built a shadow spec, thing is I have had a few bad runs in some big instances and want to change my talents so that I am far more useful in raids.  I hear that there is a top quality holy/disp spec but have not been able to find it on the net. 

If anyone can help please do so.

Thanks

I'm a regen build priest speced specifically for raids and endgame http://www.worldofwarcraft.com/info/classes/priests/talents.html?50003205050510055500502002100000000000000000
some may argue that you need subtely for endgame but teleios has done some testing with and without it and has found no visable difference in the amount of threat she generates

wait till Patch 1.10 comes out then you get a free Respec. the 1.10 priest tree is crazy

im probably gona do this after the patch http://www.worldofwarcraft.com/info/classes/priests2/talents.html?50123013050500003305103230015000000000000000000
I didn't strive to achieve lightwell but I had 31 points in holy so I thought I might as well get it. I normally would have had mental str over spiritual healing but for me max mana means nothing in a fight. Mana per 5 alone I regen almost 24k mana in the chromagus fight.