Im almost 64 with my new group. So far I did the easy to MB quests in HellfireP. I didn't do any of the quests for that goblin group (no way in hell im picking up 30 ground spawns for each toon) or any that wanted me to collect random drops., but I did do the one to pick up 8 scrap wood and 8 scrap metal as the followup quest had a good reward and was MB friendly. Ive run Ramparts and Boodfurnace a few times and completed the quests for thoes instances as well. Currently im running through about 20 or so odd MB friendly quests in Zangermarsh. When I finish thoes I should have all toons at 64 or very very near it. I plan on hitting Ramps or BF again if im not then move on.

I do have a question, if your in your low 70's would it be worth it at all to try and do BC Heroics for some loot as well as xp and then with a few levels under your belt and some gear hit WotLK?