I love truck brand tools. I have a few sets I did buy new when I was younger and single. Most, I bought either used, or in pawn shops. Buying off the truck works great for guys on their routes. However, if you just a home wrench, getting warranty from SO in particular not so hot. In fact, worse than any other brand I ever needed to turn in broken. With a couple of exceptions that happened with Sears during those last years as they were dieing, the use to be about the best. SK was equally good and so was Proto. The very best warranty service I ever got was with the specialty tool company Lisle.
The worst experience was with SO years ago when I had my pop turn in a 1/2" drive flex head I had bought new and SO actually charged him something like $10-15 to warranty the tool! Man, you don't forget it when you get screwed like that, even for a small amount. It was just the principle of the thing you know.