Product review (3 stars): Great price.
- Great pricing for a 3-pack of OEM replacement cartridges.
- The first 2 cartridges did NOT appear to have lasted as long as I hoped.  This could be because of the minerals in our water, San Jose, but I had to replace the cartridges earlier than I had anticipated.
- We do drink a lot of water and use a lot of ice, but I thought (hoped) the cartridges would have lasted longer than the did.
- I don't believe any other brands would have done much better than these, so I'm price-driven at this point.