OK, there is a ton of information, and I have just spent about 2 hours reading 10 pages of posts (luckily servers are down for maintenance so this is helping eat time away

). What i have gathered so far is:
1. The "twilight Dance" no longer works
2. It is 100% mixed reviews on which is better, pure Stam gear, Frost Resist or fire resist.
with that said, and not trying to re-address everything that has been so intricately discussed over the past 3 months, if you are in a group such as my 25-man, which of the set-ups would benifit us if we only have ONE Priest, and ONE Pally (using these values, because they are worst-case scenario for a raid night).
I ask, because I am full T7.5 and we are getting ready to run a full 25-man naxx clear tonight for ME only, to attempt to gather another set of gear for sarth only. I would like to know what out of there (which I can figure out on my own) would be a benifit for Sart3D. Another T7.5 set Gem'd for stam only, or the Frost resist with minimal other Tier pieces( to allow other guildies the chance at some T7.5 they may be missing)?
Thanks ahead of time, you guys really make it easy for dumb-asses like myself to sound like I really know all the details during raid strat discussions in the guild BTW!!!