Product review (4 stars): Works well after flushing a good 20 gallons through it. Good taste, much improved from tap water, but still kind of dirty at 1st
Filter seems to work well.  I had to flush about 20 gallons of water before it started to really come out clear.  It says you need to flush about 5 in the instructions.  The filter is only rated for about 300 gallons, so almost 10% of its life had to be wasted just to get water without carbon particulates in it.  Before replacing the filter, I took a glass sample of water from the old GE MWF and it was visibly very clear, once I installed this guy, you could see a bunch of floating particles in the water.  I flushed the 5 gallons and there was only a mild reduction, still not nearly clear enough.  It wasn't until 20 gallons later that it was clear enough that I felt I could deal with drinking whatever was floating in there since it was down to a low level in the water.  It's probably safe to drink that stuff, but still, not the so great to have to waste so much water to get it to run clear.