I'll tell you, I've always had a Snap-On box. I think them and Matco make the best boxes. We have Mac boxes at work and I think they aren't near as as good. With that being said, I was looking a few months ago for an inexpensive box that had some decent size to it. I had heard of a few people that bought the Harbor Freight boxes, so I thought I'd go check them out. Now, it isn't even close to being a Snap-On or Matco, but I'll say that I was pleasantly surprised at how well they're built. IMO they're much better than any run of the mill "big box store" toolbox, including Craftsman (by a MILE), etc. The metal seems thicker, all the drawers have ball bearings, and the paint (or powder coating) is really nice. The other good thing is you can add to it, like the big boy boxes.
I don't think you can get a better box than this for the money. There are multiple reviews on YouTube and you can check them out at there website. I got back in October and I've been very happy with it.
Here's the one I have:
http://www.harborfreight.com/roller-cabinet-44-13-drawer-gloss-red-industrial-uality-68784.html