I have the S series and I love it for its personal usage however, there are t8mes I need to blend a lot of things when I have company. If Vitamix would create both the 48oz and 64oz container for the sis series this would be great. Customers would be able to enjoy the 40 oz for personal usage and purchase a bigger container for family and friends separately. Trust me it beats having to purchase a ninja or any other blender to fulfill these needs. Vitamix is great and I don’t mind having the parts. It would be my everything machine. Thanks!