I did Steamvault normal runs, with an 80 team.
Prot Pally and 4x Shammies.

Runs were fast.
Did exalted there in two days afternoons or so.

The team had already done one run each of the lower two instances, for the quests.
Along with every quest in Hellfire and Zangarmarsh.
Not sure how much rep they had prior.
But the Steamvault runs were decent reputation.