I've got 3 big Snap-On boxes. The oldest one of which is still the best box I own and the best box ever made as far as I'm concerned. The newer ones aren't as good as the old ones, but still decent.

But I've just bought 2 US Pro Tools boxes (low ones with worktops) to park down the side of my spray booth to use as clean workbenches and store all the larger air tools, more specialist stuff etc and for the vast difference in price, I can't tell the difference between them and the newer Snap On stuff.