Pally, Mage or Druid?

Can't decide if i want my next toon to be a pally, mage or druid. I have two lvl 85's a warlock and death knight and a lvl 82 priest. I love healing and tanking and rdps but don't like feral tanking. I love the rogues mdps which is kinda like the druids. I'm good at all healing classes, played my friends but i still can't decide. Any help?