I thought I would be able to get away with the 26 but decided to go with the 44 bottom and I'm glad I did because of this site I have found that it's already full and I need the top chest to go with it.
It took a good long while, but they refunded my shipping and they finally arrived yesterday. No packing material, but they looked fine and work even better.
My order status hasn't changed so I figured I would make a call. The CS was pretty fast and helpful. She called the store and verified they had left on a UPS truck and provided the tracking number. Looks like mine are on the way.
I have the US General and it will never be a Snap on... and I'm okay with that. For the weekend project-based garage use I can't and won't justify a higher priced box. Now if I were making a living using it all day everyday I would reconsider, but for now I am more than pleased with my US...
Thanks for this write up... I looked at a couple of other tool boxes (like Homak from Napa) and compared the meaurements to your chart and I am still going with the Harbor Freight 44 inch.