I'm not gonna knock the quality of the snap ons- what's said here is very very true!
However it depends how you intend to use it. I have the black industrial roll cab, picked one up at daft offer time, and for how I use it, it has been just fine. Mine stays in its place in my garage, rarely moves and i use a tote tray to take tools to the workpiece- so it doesn't go anywhere- but it has stood up to my cloth cap workmanship and temper tantrums! I've had it 10+ years. I couldn't comment on the top box as I went for a halfords pro centre and top box, but they seem to be holding up just fine too, but maybe not as sturdy as the industrial. Home tools don't get abused a tenth as much as work tools do- in my experience anyway.