Product review (4 stars): Good value.
Installation in my refrigerator was seamless.  I ran several glasses of water through the filter, but never saw much by way of charcoal particles.  While I don't have a flowmeter, it does seem to me that, even weeks later, the water isn't flowing at as high a rate as with the H D filter it replaced. However, flow rate is adequate for my needs and the price was definitely right.  I like the little usage meter that I stick to the inside of the fridge.  Whether it will accurately tell me when the 6 months are up, guess we'll find out.