Something to keep in mind is that the tool truck salesmen also take trade-ins on tool boxes, so if you get in touch with a few you can find a larger roll-around at a good price, usually at about half-price. The auto guys on the tool truck's routes are always upgrading their boxes, and their used stuff is usually good enough for our field. For a long time Craftsman boxes wouldn't last on the hangar floor, but they have improved.
Since Craftsman tools are usually less expensive than truck brands, you don't feel bad when a wrench has a date with "Mr. Belt Sander". (Making custom/specialized tools)