I'm sorry, what? "no tool box will stand up well to bouncing about in the back of a van" ? Really?
Cos as I've also said, I've been using my SO box exclusively in the back of my vans (6 so far) for the past ten years. And other than fixing one drawer slide, that I damaged by closing the sliding door on an open drawer, it's in exactly the same shape as it was when I got it. More than I can say for the Clarke box I had, that lasted about 5 or 6 months, before it was so warped and distorted it wasn't actually useable. I literally had to break one of the drawers open on that to get my tools out before I got rid of it.
Please, actually read posts before making yourself look foolish....