As others have said plate tanking gear is good for all three tanks.
Let the DKs and Warrs have expertise though.
I wouldn't call your GM correct but I won't say he is a loser either. He is kind of going in the right direction but he still needs his head put on straight.
I do think that BV is best suited towards pallies now and am quite happy building up my BV gear. Not that I avoid dodge and parry but I don't bother fighting over it as long as I can build the BV up first.
Block Value is just plain FUN and I tank to enjoy it. The numbers we can reach are pretty incredible and as long as you aren't being wasteful in pushing the BR off the chart then building up BV isn't a waste at all. I'm not really worried about the DK's because they suffer from the same fate as the druids, spike damage. While if we can maintain a good 50% avoid and build up our BV crazy strong then we will be the best tanks to heal.
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