Instruct: Classify Amazon reviews into positive or negative sentiment
Query: simple the best sugar-free dark chocolate

I've tried a lot of sugar-free chocolate products, and this is by far the best. It tastes like a premium dark chocolate product; you'd never know it was sugar-free. As with any product containing malitol, you don't want to eat too much at one time or it can cause unpleasant GI side effects. For me, the limit is about 1/3 of these large bars. That's just right for a nice after-dinner snack. You can pampered yourself but not be inclined to overindulge. Highly recommended!