Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Love Fresh Flow Fountains But..............

I have 3 cats who refuse to drink water from a regular bowl. The 1st fountain I purchased for them was a Fresh Flow and they loved it. I wanted a 2nd fountain and since they also like drinking water from a running tap, I thought I would try the Drinkwell, which has a larger water capacity. They definitely prefer the Fresh Flow. When my Fresh Flow began to make noise after 1 1/2 yrs, I purchased this new Fresh Flow Fountain in the larger size. Although it is silent when you 1st turn it on, after a short while, it begins to make a very annoying noise. I think this particular fountain must be defective, because I have since bought another Fresh Flow (but again in the smaller size) and it is totally silent. My cats definitely like the Fresh Flow almost to the exclusion of the Drinkwell, but this large size one is just too noisy to use.