Product review (4 stars): Good deal, thank you.
Installation was easy.  Unscrewed old, screwed in new.  There's a white rubber washer in the hole, make sure it's still in there when you install the filter.  After installation, I ran 3 gallons worth of water into pitchers and dumped it out, per the instructions.  Then after that, we started drinking it.  Water tastes fine, clean and tasteless, filtered.  Don't spend $50 on the GE product at Lowes when you can spend a third on this brand.