Product review (5 stars): A Great Substitute for a Fraction of the Cost!
The quality on these seems as good as the OEM ones I'd been buying, and they're way way way cheaper.  I've had one installed for about 2 months now.  The flavor doesn't seem different, which is what I was hoping for.  (Note: I always do the recommended initial 10-L flush to get all the air and dust out.)  The only difference I noted was that it would only go into the fridge in one orientation, while I think the OEM ones would go in with the label either up or down to start - no big deal, just spun this until it would slot into the latch.