Product review (4 stars): decent filter
I've used these filters for my ice maker for quite a few years now.  Somewhere during that time, they changed how they connect to your pipes.  It used to be installed by a threaded (screw on) connection.  Now they have a "Quick Connect" install option.  My first install of the Quick Connect version was a disaster, and I ruined the filter before even getting it hooked up. The second installation attempt was successful, however, I did not trust that a non-threaded connection would hold up.  Now I'm on my fourth installation of the Quick Connect version.  I've never had a leak, and the install time is down to 5 or 10 minutes.  I'm really beginning to like these.  I use them for ice only, I never take water from my fridge dispenser to prolong the life of this filter.  (I have a Culligan undersink filter with a D-20A filter cartridge that I use for my kitchen faucet, which tastes slightly better anyway).  The ice is clean tasting and I'm pleased with the results I get with this filter.  I change it once a year as suggested.  Remember to run the water (or throw out the first 5-10 batches of ice) until the black particles are gone.