Product review (5 stars): Great filter!
Unlike others I haven't had the famous problem with the "nubs" not allowing full water flow and the wall portion is now 8 years old and the filter has been changed 7 or so times. I bought this instead of the cartridge only as it was oddly a few dollars cheaper and this way I have a spare cartridge head. Beware this doesn't come with any tubing, extra fittings, etc. They assume you're going to cut existing plastic tubing and place it inline.

To me the best part of these filters is, according to the test data, they remove more than most and they're made in the USA by a major US company that's easily held liable should they produce dangerous products. A lot of the other similar filters are made in China and you have to wonder what goes into them, what sort of plastics they use, what sort of shortcuts they take, etc? Obviously anything that leaches out of a water filter ends up in your drinking water.