So what's the difference between +x (x=1,2,3) items and NQ items? +x items seem to do the same damage (if weapon) as NQ ones and the stats don't change. Only difference I've noticed is that the weapon/armors are much harder to repair, and for materials they increase quality/durability when crafting. Are there any other differences?
For gear, + weapons add 5% to their stats per +, when equipped. If you equip the NQ version of an item, and then the +1, your stats will be higher with the +1. Durability on those pieces is also increased.