Product review (5 stars): Makes ice taste nice
I installed the Culligan IC-EZ-1 after my wife complained about our ice tasting and smelling bad.  It was super easy to install.  You can use copper or plastic tube with the filter.  I had copper line running to the fridge.  No leaks after the copper line ends were inserted.  Filter is really easy to remove and change.  One thing to consider before buying is placement.  It will project out from the mounting wall by 5" or so.  You may need to route the copper through an adjacent cupboard and mount the filter in there, then route the outflow back to the fridge.

Ice problem is cured.