Mage Cleric is pretty decent (modrod + CH = manastone for your cleric and yourself)
Enchanter Paladin is nice CC & a tank that can heal with superior heal (woot Clarity)with the option of charm for extra dps (lull, slow, haste, yada yada)
Melee + shammy is nice too (even rogue works well with root + proper pet placement)
Honestly any combo does pretty decently with a healer and tank or dps
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