Product review (4 stars): The filter does a pretty good job given the water conditions but I've gotten ...
I live in Phoenix and the water here is very hard.  The filter does a pretty good job given the water conditions but I've gotten better filtration from a Brita.  I can't compare the manufacturers model as I had to replace the filter when i moved into the house but I would probably buy the GE version next time to see if I can get better tasting water.