You neglect to mention if you're having threat issues or not, and if so, what situations you're having threat issues on. Either way, I would aim for the 264 "Cat" chest with Frost badges. Lots of armor, lots of stam, lots of expertise, all in all it's 95 badges of awesome.
I try, really I do try not to comment on prot warrior specs since I don't play one myself (at least not past 74), however several things about yours are bugging me so much that I feel obligated to speak:
- You maxed out Puncture but left a point unfilled in Focused Rage, which is much more valuable since it buffs all your abilities not just one of them.
- Improved Rend?
- Gag Order both buffs one of your major aggro generators, and adds some nice utility.
- Improved Thunder Clap is a must-have. The increase to damage and decrease to rage cost are both nice, but the real reason is for the extra 10% slow. Having a raid boss hit you 10% slower is massive in terms of survival.