Product review (5 stars): the tapwater smells like a swimming pool
Cost is a little high, but the difference in chlorine odor when compared to my tapwater is incredible.  The filter removes it completely, and when compared, the tapwater smells like a swimming pool.  I have Chicago municipal water from Lake Michigan, routed through Evanston, IL.  It's amazing how much I notice the difference now.

Slight Con: The water flow is slightly lower than the Pur filter that was installed when I bought the house, but that was only immediately after install.  Not sure if that will be a permanent thing.  That said, the water quality that comes out is worth it.  I'm not in that big of a hurry.

Full disclosure: this is the only filter I've ever bought for a fridge.  Dunno if maybe the cheaper ones will work just as well, but this one's great.