I think I'll be more retri in the expax, but might give holy ago at some point and if i do I might go with these specs:
Random BG/solo build:
http://wotlk.wowhead.com/?talent=sEAzxhzhVzG0MZacbVcux
Arena Build for low brackets:
http://wotlk.wowhead.com/?talent=sxAbxhd0VuMgRtacbVc
not a hundred percent on this one, but I think its worth a try.
and might try another build I saw on here that has points in retri for seal dispel resist.