If you want a bomb-proof, water-proof ,nauseatingly over-engineered version of the DeWalt set, look to the original version, the Festo Systainer system.
This link is to their pages of various components. All the boxes, of whatever size, latch together into a single, solid mass for transport:
http://www.festoolusa.com/power-tool-accessories/storage-systemshttp://www.festoolusa.com/power-tools/storage-systems/Naturally, these systems are vastly improved versions of my 'original' system, that was based upon ammo boxes of various sizes and a simple hand cart.
Fine for tool transport, but lacking in any way to handle 'bulk 'items like boxes and wire spools, and no place to set your work.
