I'm just gonna run around in a mob grinding mobs as quickly as possible. Like others have said, you can tackle higher level stuff, so you can always just jump ahead of the pack a bit and kill stuff a little bit harder than you should. Grinding as a 5 box is so mindless, because you kill stuff so quickly, that I find it vastly superior to how fiddly questing is. Questing MIGHT actually be faster at this point, depending on when you manage to get logged in and your setup working, but, for me, I'd rather mindlessly run around fragging mobs for an extra 2 hours, than worry about who has picked up which quest items/drops. That said, any "go to" and kill quests are worth doing so long as you massacre everything you run into as you go.