The tstak system is a great size. Not so bulky that you will fill it up and not be able to lift it, but not so small that you can't fit large tools inside. The real reason to get into this system is the drawers. A tool box with a lid is good, but only if you don’t stack them up. These drawer boxes you can stack 5 ft high and still have access to all the tools inside. We keep three stacks on each project and they have all the essentials we need for remodeling. If you move them in and out of your truck everyday they could fail, but if you are gentle you will love them.