Product review (3 stars): Not as happy after testing the water quality
I was skeptical after having bought a couple knockoffs at the big box stores over the years that never fit quite right and had terrible water pressure, but so far I've been very impressed with these. Perfect fit and great pressure. I've got a water tester ordered so soon I'll be able to truly judge filtration quality, but right now I'm very pleased.

UPDATE: 8/25/2017-
I've just finished testing my water for TDS and I'm a little concerned.  My tap water measures approx. 200PPM TDS - which is very average for tap.  The water coming through this filter measures roughly the same.  Maybe a tiny bit less if you average over multiple tests - 190PPM would be generous.  That makes me think it isn't really filtering much...  I'm going to order one of the expensive original filters and test it for comparison. I'll update again after I get it in.