Product review (5 stars): Why I don't pay less and buy generic water filters...
While I can't say for certain that these water filters remove more than the generic ones (since I have not personally conducted a water test), from what I've read about filters, these GE MWF filters remove far more impurities than the less expensive competition.  I don't use water filters to make my water look or smell better (though that is a definite plus)... I use them to remove those things that I cannot outwardly detect, such as harmful metals or microbes.  If you read their claims about what they can remove, you will probably find that with filters you really get what you pay for and if you're paying less, you might be getting 'more' than what you bargained for in your water.  Just my 2 cents...