Product review (5 stars): Perfect replacment
I've bought two of these now and I love them.  I think other reviews that talk about murkiness and coloration haven't read the instructions that tell you to flush up to four gallons of water through it before drinking.  I've never had to do that much.  I ran about a gallon through both times and now my water is tasting sweet!  It's just my wife and I so we go up to a year with one and the flavor never got bad.  With name brands costing almost twice as much, you can't go wrong with this.