Product review (3 stars): Juries still out on these.
Still undecided about these.  Replaced filter, flushed several gallons as recommended, next morning nothing working.  Checked everything, got paperwork out to call for warranty repair and about an hour later something came out of the water hose (not sure if ice or what) and it started working.  Never had this trouble before.  Looks like others have had issues as well from other reviews.  Time will tell if they are good enough and if this happens with the next one.  If it was a fluke, I'll continue to use but if the other two from my pack are issues, won't be reordering.  We'll see.