With no sign of patch 4.1 going live so far and all the tier 12 raids not coming until patch 4.2, the best place to get gear is still in raid dungeons. Last week, we covered all the DPS gear you could pull from raids -- so this week, we'll cover tank gear.
Note that with tank gear, there is still a pretty healthy debate going on in the DK community over whether mastery or avoidance is the best secondary stat set to get. We've covered this extensively in past columns, so I won't go too much over it again, but suffice it to say that you'll have to examine the boss fights you're doing, your raid makeup, and your own playstyle to see what works for you, although you should strive to fit in four pieces of tier gear in order to get your set bonus. This list will cover primarily raid gear and valor point gear, but reputation rewards and crafted items will be mentioned where they are a viable possibility for the slot.