Check out my smoothie maker review if you are not sure what to pay attention to before buying. For example, what material is the jug made of? There are three common materials out there – glass, plastic and metal. Plastic jugs are quite popular because they are inexpensive. They are also transparent, so you can see how well the ingredients are blended. But then, plastic will lose its appearance overtime. That transparency will be gone. It is not too safe in a dishwasher either. All in all, it is up to you to determine what kind of quality standards you expect from this appliance.