Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Metro Mint Spearmint

The metro mint waters are great. They have no calories, and just a light mint flavor. I've always had trouble liking/drinking water, and these I can drink. I think the Peppermint flavor is a little better than the Spearmint. Occasionally, I've had the Spearmint taste just a little rancid.