Actually, I took the bracelet from the wishing well (max money) just after getting to level 13 and am still using it at level 25, so the +1 Wisdom bonus has given me more experience than asking for experience directly. It is not that great anymore (+31 hit points, another minor bonus, a charm slot and 2 enchantment slots, one of which I filled with a level 10 healing aura I was lucky enough to find the formula for in the enchanter's cellar), so if I start running into problems I am keeping a replacement handy. Until then, the Wisdom bonus I don't really need is better than other bonuses I don't need at all.