Duo + magician in trio advice

[Bodybagger]

and as for the tag end of fishbaits comment, mage is one of the most efficient constant DPS sources for grouping around, and necro is solid dps and great utility class when played to full effect with ability to charge mana, spot heal, help with CC, etc. They can do almost anything in game... Necro, Bard, and Ench are probably the 3 most versatile classes in game and Ench and Shaman and Bard probably 3 best utility classes unless you count porting