Hi mate. I got the problem that one of my toons was about 1 lvl behind the others, and what i did was that i did the collection quests only on him to adjust it.. That way i only need 1x of all the quest items. You might considure doint that if you get the same problem. And maybe do the ones that gives nice chains. But in general i thing you would get more from instance farming.. that way you will also get rep and lots of loots (gear / gold)