I'm with your grandfather. When a cheap tool fails, it's going to be when you need it the most. Which means another trip to the goddamn hardware store. fuckthat. Also when tools fail; you're right there with them. also fuckthat. wear PPE. And even when cheap tools work; they make your work suck more than it might already suck. Yeah, your little narrow body handles on those box wrenches might be okay, if all you got to do is work one nut/bolt. Any more than that and it starts to hurt your hand to use.