[Zehrikrom]

Pick what's fun to play. Having a superefficient able-to-kill-vox-at-level-30 group is pointless if you're all bored. Assuming none of you know what you want to play and will be okay with any class, though...

1. Paladin. You get buffs and little heals, and can tank decently.
2. Shaman. Better than cleric in this scenario because you have non-paladin buffs, and better than Druid because you can go into a dungeon and still be maximum useful.
3. Wizard. Ports are awesome, sick burst is awesome, kickass face-melting nukes are all-around dandy.
4. Ranger. You get a bigger choice of weapons than rogues. you're sacrificing 0.2% of the damage a rogue or monk would have gotten you, but you have (shitty) heals and snare.