I ordered the set of replacement filters and received the version without the blue protective casing, just a stiffer fabric cover, which is supposed to work the same as the others? They don't have charcoal granules inside... I'm not convinced they'll be as effective.
Overall, it’s a nice drinking fountain and both cats like to drink from it. At first, I received a plug with loose pins, but that was sorted out. Now, within a year, the pump has broken, despite good maintenance and regular descaling. So, not really durable.
The old version, with "Cate Mate" written in red letters on the front, is really good. Quiet and has worked properly for years. The new one has a different motor and starts making a loud buzzing noise quickly when there’s less than a full amount of water in it.