Product review (5 stars): Glad I bought the Samsung replacement filters and not a cheap knock-off.
After doing a bit of research on these filters I found that you can't even compare the quality of a brand name filter like Samsung to many of the generic filters.  It seems that not all filters are created equal and many of the generic filters do not filter out all the particles and chemicals that the Samsung water filters do.  They are not created equal and in addition the generic filters can be a little off in their sizing and many of the comments I read about them say that there was a water leak with them as a result.  A few comments also stated that the generic filters did not turn off the light that comes on when it is time to replace the filter.  I did not want to take the chance of a water leak with such a quality refrigerator and when you figure out the cost per day difference, it just isn't worth the savings.  Why risk the quality of drinking water just to save a few pennies!  It is still cheaper than buying bottled water and much better for the environment.  To save money I suggest buying them in bulk rather than using an inferior water filter.  There can be quite a price difference between sellers, so do your homework and research!  Some charge for shipping and handling and others do not!