Ok so long time troll, first post but here goes. There are 2 viable ilvl 245 tanking helms that can be picked up with 75 Triumph Emblems, and 1 requires a Primordial Saronite (add 23 Frost Emblems since I don't have the 2.2k needed to buy one on my server). Both have roughly similar stats except for 1 crucial area that I've heard endless debate about since the release of ICC.
The first
[Faceplate of the Honorbound] has a little bit more dodge (approx. 0.87%) and expertise, but has significantly less STR (which I've come to understand that we don't necessarily care about).
The second is the T9.5
[Turalyon's Faceguard of Triumph] which requires the Primordial Saronite. The big thing I notice on this is the 210 to block value, and I would get to keep my set bonus even after replacing my hands which are next. When combined with the ilvl 226
[Libram of the Sacred Shield] would put my block rating through the roof since Holy Shield is IMO the biggest survivability aspect (due to the awesome mana regen) of the 969 rotation and is ALWAYS up when I'm tanking.
Now having said all that, the question is this: with the -20% to Dodge walking in the door to ICC would it be better to spend the extra Frost Emblems and get the T9.5 while at the same time switching to a lower Libram, than keeping the Libram i have now
[Libram of Defiance]which boosts my dodge while getting a helm that would further increase my dodge rating?