Product review (5 stars): great price for a great product
There's not much choice in which filter you will buy unless you consider this at the time of purchasing the refrigerator.  I made the mistake of buying a Kenmore fridge which used very expensive proprietery filters.  Thankfully when I moved, the fridge that came with my house uses this handy, much more affordable filter.  The Amazon price is the best I found, and the filters came very quickly.