I use the Tough Boxes to store finish carpentry tools, my Makita routers , non Festool sanders, Sawzalls, socket sets and anything I don't want to get wet. Tstack was to lightweight for my needs, I also use Systainer ( Tanos, Festooned and Makita) and Sortainers. Both have a place in my shop.
I have to admit they look well made especially for the price but i think they need to desighn one more . i think its the 17808, it would be great if it had deeper lower storage and more shallow top storage, that would make it a great drill /impact box, it would be the first one id buy and we all know if you get one the 2nd isnt far behind......probably my only hesitation
I purchased some of these with the intention of storing my DIY plumbing and electrical parts/tools in them. They seem to be made of a tough plastic material, but I found a serious design flaw in the ones that have drawers. The handle has a locking mechanism in it that catches on a very small plastic tab on each of the sidewalls of the case. YMMV, but on mine, several of the units had one or both of the plastic tabs broken in shipping. If both tabs are broken, the drawer won't stay closed and if only one is broken, I figure the other side will eventually break from the added stress. So check to make sure your drawers lock on both sides before you purchase if you can.