Did you know that a MFR mob grinder can take all the frustration out of enchanting your best gear?
By killing zombies and skeletons in a grinder, one of the (often ignored) drops is equipment, much of it enchanted. At a fraction of the cost of randomly enchanting your gear in an enchanter, you can strip the enchantments you want off of the mob drops to a book (combine them for higher level enchants) and then place them on your desired equipment; all powered by mob essence.