Oh? Ranking from least favorite to favorite...well, then.

1) Soulsmith
2) Shaman
3) Aethermancer

Definitely would want to have a Soulsmith, if possible, but I'd be fine with Shaman or Aethermacner, I suppose. 

Though I do agree with Tyrant. All of them are pretty cool, so I could be flexible.

Except for Avatar. I mean, I could come up with something probably, but eh, I dunno xD