I bought that 230 piece Craftsman kit from Lowes in October.
I've had 3 of the 2 drawer Craftsman Versastack boxes in my truck at work for about 4 years now. I use them for hardware and fasteners, they've been great.
I wanted dedicated trail tools, I was tired of moving stuff back and forth from my big box, so I used that Craftsman set as a starting point for a dedicated mobile tool box. I used that Craftsman kit, and added a 2 drawer Versastack box to it for additional stuff. If you want to be able to lock and unlock the toolbox set, it has to be on top. If you attach another Versastack box on top of it, you can't access the locking knob that keeps the drawers closed.
It's not perfect, but so far I'm mostly happy. There's still not enough room for everything I want with me, so I still have a tool bag with some random stuff in addition to what's in the Craftsman Versastack stuff.
I'm pleased with how well the Versastack stuff has held up, I've got a decent amount of experience with them now, but my work truck isn't abused as much as my Jeep is. Those Versastack boxes full of tools survived a weekend of wheeling, ratchet strapped down in the back of my Jeep. That's more than can be said for the Craftsman 3 drawer steel tool box that the Versastack stuff replaced, that piece of garbage ripped 3 drawer slides off the box in one weekend of bouncing off rocks.
This thing sucks.