Finish any quests you haven't, including instances ;p If you have to grind, I'd stay in hellfire personally, better drops + possibly rep(and if you can "solo" ramparts by all means do that instead)

Personally? If I were relatively close to 62 I'd just move on to Zangar, I think most of my chars solo + druids were around there when they moved on anyways, and half the quests don't open till you get rep up anyways, so you can grind in Zangar instead if you want. If you're like under 50% to 62...I'd still grind rep with the exp somewhere, hellfire if you're able or Zangar if not, the mobs in zangar ain't that tough, and if you have an herbalist, the boglord guys are good cash income for herbing ;p