Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good electric toothbrush

It took me a long time to pick an electric toothbrush. All the reviews on amazon.com were very helpful. I bought this version and I have no regrets. This electric toobrush works really well and comes with 4 brush heads. My teeth feel nice and clean; the same feeling I have when I leave the dentist after a cleaning. Make sure you read the directions so you know all the features that this toothbrush has.