Instruct: Classify Amazon reviews into positive or negative sentiment
Query: "Whisper" in Name Only

Our old air pump quit and we bought this as a replacement. Big mistake!This is the NOISIEST air pump that we tested as a replacement. It lasted three days before we couldn't stand it anymore! It has a LOUD AC hum that resonates and cannot be stopped!We returned it and purchased the Whisper 300 instead. The Whisper 300 is the quietest air pump I've barely heard! It's definitely worth the extra bucks.Stay away from the Whisper 100!