I'm a big fan of Snap-On. People always talk **** about it because it's expensive, but exceptionally nice tools are as much of a vice for me as nice bikes. I have a big Classic 78 stack and a 1974 vintage top box in my shop.

As far as bang for your buck goes, you can't beat the Harbor Freight US General Pro boxes and roll carts. Make sure it is the Pro version though. Those are twice the box any modern Craftsman or Waterloo is.