I have collected ~40 Emblems of Valor and I have spent a ton of time trying to figure out what to spend them on. I really appreciate Vene's guide on the Gears and Rankings forum.
I do have one question though. Vene says the Platinum Mesh Cloak is a best in slot item. I've spent a lot of time looking at the top guilds and their warrior tanks and it seems that most of them wear the Cloak of the Shadowed Sun.
As the MT in a guild that can clear 3 wings of 25-man Naxx, I don't think it will be long before Cloak of the Shadowed Sun drops for me.
If Platinum Mesh really is a best in slot item I would buy it in a heartbeat seeing as my cloak is rather weak. I would hate to spend the 25 emblems only to replace it with Shadowed Sun in a week though.
Your gear is remarkably similar to mine, I have gotten a few upgrades. Some valorous pieces, new pants from 25 man OS, Shield from Malygos. My advice, pick up the cloak. We are clearing 25 man Naxx and I didn't wait for a better cloak to drop. IMO the Platinum Mesh Cloak is the best cloak to have. The boots aren't a huge upgrade, and rings are pretty easy to pick up as half the bosses in Naxx have a chance to drop them.
Whatever you decide, IMO cloak of the enemy is a better choice than armed strife, but youre def capped so who knows.