If you’re looking for a solid storage system, check out toughbuilt or flex. As someone with the rare experience in several different mobile tool chests, flex and toughbuilt kick the hell out of the packout. I run the toughbuilt stacktech myself, and it’s got everything I could have hoped for. Tough as hell, metal corners, waterproof, no fumbling to lock or unlock pieces as they connect automatically, and they’re a good bit cheaper to boot.