Instruct: Classify the given Amazon review into its appropriate rating category
Query: I’ve tried other proteins before but heard good things about Optimum Nutrition

I’ve tried other proteins before but heard good things about Optimum Nutrition. I have their cake donut a shot and it was horrible it sounds good but tastes like nothing. It’s pretty flavorless which makes it hard to drink. Out of every protein I’ve purchased this is my least favorite.