Product review (3 stars): Not the Same as the #4396710
If you go to PUR's website, you'll find that this filter handles only 4 problem areas: (chlorine, sediment, lead, o-dichlorobenzene).

The more expensive #4396710 Kitchenaid/Whirlpool deals with 11 problem areas (the side of the box lists all these in detail: (chlorine, particulates, lead, mercury, benzene, o-dichlorobenzene, toxaphene, asbestos, cysts, turbidity, atrazine).

The strange thing is that the PUR website only seems to show the cheaper filter and its attendant 4 areas of filtering. It may just be my ineptness, but I couldn't find the other better filter on their website.

My wife, wanting the best water, always opts for the more expensive filter. It's around $60 in local area markets. I just ordered one from Amazon a couple of weeks ago for $35 delivered; other internet dealers carry it for around the same price.