Product review (5 stars): Perfect replacement
Wasn't sure with some of the bad reviews about the taste of these, but I figured getting 2 for less than the price of 1 name brand version would be worth the shot.  Worse case, one would be bad but at least I would have a backup to check.

Installed the first one without much trouble.  Cleared out about 2.5 gallons of water and the wife and kids can't tell the difference!  Save your money on the name brand and give these a try!