I equipped my tank with a lot of the starting blue outland gear with sockets, and stacked the +18 and +24 stam gems all over, and I feel incredibly OP. The Wotlk Gem curve makes even the 18 stam gems so cheap, I just bought a ton of em, many for 50 silver each. There's a dungeon drop in zangarmarsh thats a great 2h mace with 3 gem slots, so u can put 3 +24 stam gems in there and be godly. My DK is a tank for both a 4x ele sham team, and a 3x lock 1x resto sham team, and I hardly need any healing from either team.