Scholar isn't bad because of HC and heal clip, but I think Paly is the absolute best for this event.
With a Peco and AGI up, you're moving supa fassst. And then you have a heal skill. If you have a quad drac, it's endless SP. IMO, the best.
HP would be next best.
Is it really endless SP? I just recently finished gearing my sader; I went out with a quad drac mace to GC some mobs; I wasn't really seeing endless SP. I might be doing something wrong---but it being mentioned makes it quite convenient to ask 
I was shield chaining. I don't know if that makes a difference. When my SP was low, I switched to a quad drac, got my SP bar full and went back to a TTHP wep.