Product review (5 stars): Quality replacement filter.
Very fast shipping and great customer support (not that I've ever needed it).  They follow up with you to make sure you received and are happy with your purchase.  As for the quality of the filter, it is just fine.  Filter does not impart any taste or odors to the water.  Water is clean, clear, and tastes just as it should!  And you cannot beat the price!  This is my second filter from Waterfall Filter Company and I will continue to buy my filters from them.