Whirlpool KitchenAid PUR Water Filter is perfect choice of many users who are already using and they have provided good reviews on Amazon.com too. The product is approved from NSF so this water filter is able to preserve helpful fluoride in drinking water and it reduces chlorine taste and odor, cysts, asbestos, particulates, lead and mercury from water and it serves with pure drinking water to drink which is very beneficial to your health. Personally, I use Whirlpool 4396710P for filtering water and I keep replacing the filter at every six months so that it will keep working accurately and fast. 4395710P has double sided refrigerator water filters with the push button option. The model number 4396711 is compatible with 4396711 too means you can use water filter from one machine to another as the filters will work for both. The refrigerator can remind you when to replace the water filters with the help of indicator light near the water dispenser. Overall this is a great refrigerator for water and ice related stuffs and it should be kept in almost all the kitchen to meet your pure water drinking requirements.