I have a pure paladin ranged toon and a ranger/pally ranged (12 Paladin/6 Ranger/2 Monk).
With the AoE addition to ranged, I suspect I'll try an archer paladin that has 4 AoE ranged attacks in heroics - Inferno shot (AA Tier 2), scattershot (HW Tier 4), exalted shot (KotC Tier3) and avenging shot (KotC Tier 5).