Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Couldn't Be Happier

Ordered on Saturday, got it Tuesday afternoon around 2pm. 20 minutes later I am listening to all my MP3s. With a computer that notoriously rejects new installations, had NO problem. Set up was quick transferred about 15 mp3s in about 5 minutes, disconnected, ready for the gym.I can't speak to the long term performance but so far I couldn't be happier with my latest, favorite, little toy