Can't go wrong with any of them

I personally prefer Druid because they can also taunt if you need to. And I think Druids are better at endgame stuff like boosting, they can save time by stealth/feign death through trash, they are great at wPVP baiting/scouting, you have a flag carrier for the battlegrounds phase, and if you ever downsize to 2-boxes they can still farm dungeon bosses with a hunter.