i play the more common paladin and 4x shaman. ive been thinking about leveling up a druid tank lately. the reason being, with dual spec, you could respec the druid to balance or resto for much better synergy in BG's/PvP. playing 4 ranged and one melee, your melee tends to spend a lot of time standing around doing nothing in PvP. the druid seems much more adaptable.