I never tried an expensive one, but I got one once that as water came out it refilled, well Harley emptied it in less than 2 minutes (and not by drinking) he thought it was a swimming pool. I came back to a pool on the floor
. I then filled it and put it in the tub to make sure it wasn't leaking, come to find out he was just pawing the water out... So if you invest in one, make sure you consider the idea of them playing with it and making a mess. I would have never thought of that.