Which stat is better? (Dodge, Parry or Blockrating)

[Brannigan]

My current main tank gear can be viewed here:

http://armory.wow-europe.com/character-sheet.xml?r=Anachronos&n=Brannigan

Unbuffed:
Armor: 15808
Defense: 504
Dodge: 23.03%
Parry: 16.16%
Block: 17.37

What I would like to is to get my Moroes Pocket Watch running. But that would be on the cost of Figurine of the Colossus (block rating).

Basicly what I'm in doubt about: Should I aim for dodge or blockrating? - and then keep stacking some BV if I keep blockrating stats.

Atm. I'm only going Karazhan - but I'm starting to think that I kind of outgeares that place with my badge-gear.

[Arthurious]

you block at a higher rating than dodge and parry so lvling it past 102.4 is useless

most tanks after they hit 102.4 go for dodge and stam/block value/armor

[Pane]

After you reach 102.4 uncrush, you need to start doing a few things with that number. The first thing is KEEP it at or above 102.4, the second is start to reduce your reliance on blockrating and exchange it for 'real' avoidance.