Pally, Druid, Hunter would be my vote.

Reasons:

2x Healers
HOT's from druid make heal management easier
Pally can self heal
2xRez

2x tanks (+ hunter in decent armour can take a bashing
+ auto off tank (hunter pet)

CC from druid

Hunter pretty much works on auto pilot, (auto shot / auto melee) but can do burst when required.
Druid can be dual spec as boomkin, healer
Pally can tank and still do insane DPS, and even backup heal.

That's an easy group to control, but is still very flexible