I don't know. It depends on who I'm playing with. If I'm playing with just the typical group of noobs then I leave items on. If I'm playing with someone that has a lot of skill I'll turn them off unless they prefer them. Pretty much, I find myself being an item hog using Z like mad. I typically, therefore, turn them off in order to use the characters moves. I somewhat agree, not honestly the best thread topic in the world though.