So there have been some recent upgrades to the Rawr Tankadin model. For example, you can now optimize your gear set based on health, avoidance, block, uncritability, unhitability, etc. This makes finding the perfect block set much easier - as now you can select all relevant buffs, then let the program find the best block set with x health.

For example, I used the following:
Optimize for Block Value
% Chance to be Hit <=0
% Chance to be Crit <=0
Health >= 35000

I selected all raid buffs you'd expect in a 25 man raid: Str of Earth, Imp Comm Shout, Imp Fort, Imp MotW, BoK, Def Elixir, Guru's Elixir...

and ended up with the following:

35086 Health
26973 Armor
2567 BV + Libram proc
547 Def
46.13% total avoid

To download the Rawr file and see the gearset, click here:
Free File Hosting Made Simple - MediaFire

Note that I am a JC and a Miner.

Block value novelty sets aside, I also wanted to ask how everyone is using Rawr's optimizer, if anyone is using it. I felt lately that I have more health than I need and would like to balance BV and Avoid a little more...but I'm really not sure how much health is "enough" for current content (not worried about Ulduar right now). I am the MT of my guild. I was at ~42000 hp raid buffed before, but swapped some things around and am now at ~40,000...I want to drop lower, but am not really sure how much lower I can drop and get away with...maybe 37,000?

I think I was barely at 32k when we did our first malygos kill and I often tank bosses in my trash set these days (not by intent) which puts me at 28k unbuffed (compared to 33k in my max EH set).

So I've been working on itemizing my gear to be more of a mitigation tank as of late, noticed that with all the Ulduar info/items being leaked, it leaves Block rating/value a little lack luster, not much, if any of the loot I saw other than the chest piece has any of those stats on them.

Does this mean I should probably re-think the way I've been itemizing and that Mitigation isn't what Blizzard intends anyway to tank as anymore?

I've tanked in around 37 raid buffed with healers reporting barely any difference from when I'm using HP gear. Strangely, I tried tanking in my frost resist gear for shits and giggles, which had me at nearly 45k hp raid buffed (without flask and food) but crap defense. I was still easy to heal according to my healers, even when I got a crit.

As for the optimizer, I'll try it as soon as I get a change, I'll give some feedback when I've looked into what it can do So far I've only used it to check upgrades when offline. The only thing I've noticed is that it recomeds Sand-Word Ring above alot of other rings, while TankPoints do not (may be the other way around.)