I guess i am stumped!

[Fernagol]

so what should i focus on Shield block value or expertise. can you guys help me with what i need next in terms of tanking?
The World of Warcraft Armory (http://www.wowarmory.com/character-sheet.xml?r=Undermine&n=Nalfein)

Thanks, D

[Aromit]

A balance of both, really.

[Nilya]

Expertise is nice, but I think the cloak would be the largest upgrade you'll see from those, then the other items.