Glass: When is comes to aesthetics, glass is the way to go as it provides a professional look in front of guests and is often stain-resistant. However, the heavier container can be more strenuous for frequent pouring.
Plastic: Virtually indestructible. Even though scratches or stains may be a little more obvious over time, you get more bang for your buck by going with a plastic container as it will last longer.
Stainless Steel: These are the solution to needing a visually pleasing blender that provides durability. The obvious downfall is one can't see what's being blended, which may make it hard to determine the drink's consistency.