So yeah, I have a geared Prot warrior (399ilvl) I use to tank Morchok/Zonozz/Ultrax (and soon to be Yorsahj) and a Druid tank I use for Hagara and Yorsahj (Druid ilvl is around 390).
(Speaking of HM's above BTW, guess I should of said that).
4pc on both, CTC capped on warrior, around 10k more stam on Druid than Warrior.
I would post armories but not really comfortable posting it as people I know check these forums regularly.