I'm not loyal to the Snap On brand although most of my tools are Snap On, I think there are a lot of good quality tools out there from other manufacturers.
When it comes to tool boxes though, IMO, I think the Snap On boxes are miles ahead in terms of quality than the others I have come across.
A few years back I was going to chop my box in with my Mac dealer against a Ford Racing limited edition box. I ordered the box but after looking at and trying my mates identical box to the one I had ordered, I cancelled my order. I just felt that the quality just wasn't there compared to my Snap On box.
Yes, it was a pricey box but you get what you pay for!