any good solo classes that aren't too popular right now?

[Ferok]

I boxed an enchanter for most of my 50's when I was leveling my paladin on live... so I can't speak too much to their solo abilities.

However, as a Paladin, enchanter was a perfect "partner" for me, and I'd imagine that's the case with many other classes.

I guess my point is, you won't lack for the ability to group, and you'll often be able to effectively grind experience with just one other player through 60. Excellent partners include, but aren't limited to: Pal, SK, Rng, Wiz, Mag. Slow, haste, cc, and crack make you everyone's friend.