Check out the Stainless one Sam's Club carries. I bought mine as a cheaper work box several years ago. I needed something right then and there, and did not have the cash for a good commercial box. I would definitely buy a second one. SS exterior, roller slides for the drawers and pretty decent casters. It has survived 5 years in a factory. It would last a lifetime in a garage...
This is what I did as well. $699.00 and it will last me forever in the garage!