Product review (4 stars): Expensive, But You Gotta Have One
Since this is a genuine replacement part, it works well.  The local water has high mineral content, so we installed a water softener.  The water coming into the filter has had many contaminants removed.  The bigger issue is the manufacturer setting that requires you to change the filter when something like 170 gallons of water have passed through.  I believe we replace our filters well before they really need to be replaced.  And they are expensive.