Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good bang for the buck

I have used Optimum Nutrition products for 3 years and have yet to be disapointed. They really don't skimp on quality and have clearly marked labels with what their supplements do, and do not have. This, along with their other products are priced very well for the quality level, which is very high. I plan to continue to use.