I really love this fountain a lot, and this is the second time I've bought it. When I had to move for my job, I had to leave most of my stuff behind. However, when it came to picking a fountain for my cats, I didn't have to think twice. This fountain is a personal favorite of mine, and my cats love it too. It runs quietly, holds up to 2 liters of water, sends me notifications via an app when it needs to be refilled, and comes with replaceable filters. I'm so happy with it that I would gladly buy it again for a third time if I had to.