Got the Shado-pan trinket today after dinging friendly from one of the summon quests; amazingly good, even for the hit it gave me. Allowing me to run 6k on Haste/Crit with Hit and Exp at 2550 at ilvl 494. Anyway, back at Horridon I found tanking much easier once I started purifying after every Triple Puncture and running glyphed Guard with Zen Sphere up all the time; got my damage taken down to between 34-38k DPS, inline with the other tank AND was pumping out a solid 95k DPS of my own. Saving Xuen for after a switch so he can go vengeance filled and furious on the next troll tribe was very effective.
Edit: Oh yeah, and 10k HPS on my part too