I've been working on a system to eliminate +X items from the game by giving each class flat +X bonuses instead. So the end effect is the same, it just happens during level up instead of looting. I think I'm all set for martial characters and skillmonkeys, but what about casters? What +X items would be good for them? Every class uses stat boosters, but how do I balance the bonuses to casters against other things? I'd like to match the gp value of the bonuses to other classes to keep it balanced.