This is going to depend on the individual and why/how you use your blender. For my family, the Aer Disc container is perfect. We love to froth milk and we almost equally love to make lemonade like this Best Strawberry Lemonade recipe. The Aer Disc lets us do both with ease. If you are primarily interested in making smoothies, soups, or icy drinks then there really isn't a strong reason to splurge on the Aer Disc Container.