Here is my avoidance (not taking full hits) right now with a combination of 10/25/heroics gear. Not what I'm always wearing, but most bosses that don't require me to toss some more stamina on, definitely need some better gear, but competing with 2 other plate tanks on drops.
29.71% [block rating]
5.68% [chance to be missed]
5.00% [boss miss chance]
82.2% [chance to block or better on every incoming attack]
This is about in line to what I typically see from a boss fight. Most of the time I take a full hit approximately 17% of the time, which I'm going to say is because of raid buffs, trinket use, and some RNG (Random Number Generator). Once I get some more gear I'll probably be getting much more defense rating and block rating, making me able to push these numbers significantly higher.
I can definetly see getting 102.4% avoidance particular with the MASSIVE amount of block rating available on gear, whether this is particular useful with the other stats needed to be given up will depend on just how hard bosses hit and how often they hit.
Last edited by Parah; 12-14-2008 at 12:47 PM.
I'm from Onyxia, where trade chat makes you wish you were in the barrens.