What would you consider the "best" leveling group?

[Vulmas]

I'm gonna assume you were looking for something more traditional and practical.

You're going to get a lot of opinions on this and there really isn't one right answer.

In my opinon, I think that War, Cler, Monk, Rogue, Enc, Sham is probably the most effective group from 1-60 as long as time is taken to ensure that everyone stays as well geared as possible.

That being said, serious and credible arguments can be made for switching out the rogue or monk for a mage or wiz, and the enchanter for a bard or the shaman for a druid etc etc. Like I said, there is no "right" answer to this.