Product review (5 stars): Works just as good as the manufacturer's at about 20% of the price.  Back for my second after 6 months.
Just back online to purchase another Waterdrop LT500P for my LG Refrigerator.  I purchased my first mid-October 2017 and it is now mid-April 2018.  It is still working but the light came on the refrigerator and I can see it is a little slower.  So, at this price I'm going to re-purchase right away.  The price did go up $1.10 from six months ago, but it is still a great price.  Manufacturer's filter is 4 1/2 times the price.  This one works just fine, water tastes good and looks crystal clear.  I'm happy with it.