I think there was some consumable that let you see invisible creatures AND deal full damage to incorporeal creatures, but I can't remember what its name was (to be truthful, I'm not even sure this item exists). Does anyone know of something like this?
Holy weapon balm is pretty great for vital strikers, but the one hit and done for melee weapons combined with the standard action application is kind of meh, most of the time. Once you have more than one attack and a magic weapon, it's better to just full attack.