So I'm going to be levelling a couple o' shamans, however I'm wondering how I should level:

1) Start them together, and just level them together via questing and any instance runs I can get into.
2) Boost one with my 70 Warlock as far as I can, then using him to boost the other as far as I can, then level the lower one to the level of the higher one, and eventually questing/grinding to 70.

If there's any better ways of doing it on my own, I'd love to hear it. I only have a 70 Warlock on one of my accounts at my disposal (other account is new, so doesn't have anything on it yet), and I don't fancy transferring at all.

Cheers,
z3rb