Product review (3 stars): GE GSWF Water Filter
Maybe it's just my refrigerator but these filters seem to clog up really quickly slowing the flow of water from the dispenser to a very frustrating level within a month or so.  This is compounded by the fact that they are quite expensive to replace.  However, as a necessary evil, I'd recommend Amazon for purchasing since they were way more expensive at the local big box hardware stores.