I bought 2 of the Pro 750's a little over 2 years ago- one for myself and one for a wedding present.  I am about to buy another- those nieces just won't quit getting married.  One change I would definitely like to see is high visibility markings on the side of the container.  Those quantity markings are impossible to read when loading your stuff.  This seems a high quality item with a price to match, but little details like that greatly improve the pleasure of use.