Look at United Welding Services boxes, I have one they are incredibly strong and durable. I dont know if they have them up there in Michigan, they are made in florida. Agri-supply sells them. In the south they are regaded as the best money can buy.
The only tool box i would buy is weatherguard. The reason for that, it it is the only toolbox that has a decent lock. My dad is a locksmith and has run his own company for 30 years. He had to open a weather guard tool box for a guy who lost the key. It took him over 30 minutes. He was opened other toolboxes before and they usually took him under 2 minutes. My dad is good. If you dont ever want to worry about your tools getting stolen, but a weatherguard. Criminals WILL NOT GET into it.