Product review (3 stars): You Can Get More For Your Money
This filter works great, but it only removed a limited number of contaminants and it's expensive.  I used to buy these, but I decided to go to an under sink RO system.  Amazon has one called iSpring that is awesome and it's ~$200, including 6 mo of filters.  So for a 2 year supply of these filters, you can get a system that does a MUCH better job of filtering your water.  And you can get a kit to hook the RO system to your fridge for your ice and cold water.  The replacement filters for that system are about the same price as these.  In terms of value it's a no-brainer.  You have a one-time cost for the RO system and then you'll have way better water than this filter can give you.  Note that setting up and maintaining the RO system is more work that sticking your hand in the fridge and unscrewing this cartridge, but if you're up for it, it's totally worth it.