Product review (5 stars): Half the price of the GE brand and just as good.
I was tired of paying $40 bucks a pop every time my filter went bad.  I found the Water Sentinel brand on Amazon and read the reviews.  Like most reviews 50% were good and 50% were bad.  I ordered one and tried it for myself and........WOW I am finally free from paying $40.  The Water Sentinel is just as good for half the price.  I did not experience any leaking or other malfunctions that have been past reported in other reviews.

From the Amazon Junkie.