We really like this fountain.  The cat loves it and will get upset with us if we unplug it.  It is nice that the water is filtered and that it is moving.  The bowl is big enough for a few cats to drink from at a time.  We have had to adjust the top part a few times to keep the water flowing...I don't know why it stops because there is enough water, but once we take it off and put it back on it starts working again.