Product review (5 stars): Good filters for a great cost.
I desperately needed a new filter for my old fridge and decided on these filters to replace an old OEM filter that had hit the two year mark (It really needed replacing!).

I really only have positives to say about this filter, being that it really only has one job.  Things I noticed right away: A much improved flow rate. Our water is very hard, so flow rate over time will deteriorate greatly. Taste is very clean, and I had no crazy carbon output from the filter.

I can't say anything about the longevity of these filters yet, but so far the first filter out of the pack was perfect.