Why it's worth it
One hundred twenty-eight ounces and a ring of up to five streams, so three or four cats can drink without queueing or bumping heads. The bowl is stainless, and this listing bundles a stack of spare carbon filters plus extra foam.
Get this one if you have three or four cats. PetSafe puts the capacity at 128 ounces, roughly a gallon, and its specifications describe that as enough for three to four adult cats without a daily refill. In a busy house that's the difference between a chore you do every morning and one you do twice a week, which is exactly the sort of friction that decides whether a fountain stays in use.
The 360-degree layout solves a problem you may not have named. Most fountains have one drinking spot, so a lower-ranking cat waits, and a waiting cat often just wanders off to the toilet bowl instead. Here the streams come off a central tower in a ring. You can run anywhere from one to five of them and twist the top to change the flow, and cats can drink from any side at once.
From our review of 7 cat water fountains, by James Bennett, Associate Editor