Definately do Ungoro, heaps of kill X quests and such. Only a few collecting ones.
Everyone mentions Ungoro but when I scan wowhead most of them seem to be collection quests (bones, petals, crystals, etc.) I remember questing there with my main EONS ago and simply can't remember the details. Maybe I'll have to give it a twirl.

That said I'm thinking some instancing might be more fun.

Regardless, thanks ALL for your feedback. Great community here!