I box 3 paladins and lovin them. I can take on a dozen or more enemies at once and AoE through them. If your considering boxing paladins i can give you my tips on how to box a healer as a slave extremely effectively.

Just recently in Skorn in Howling Fjord i took on a personal record number of enemies. 22 all at once. I face pulled them all while mounted ran inside of a neaby building popped my 50% damage reduction shield and ripped a hole right through them with AoE (imp ret aura+divine storm x2+consecrate x3=massacre.) Over healing is a must while doing such pulls although it completes grind and gathering quests in 2-3 pulls