I purchased all the T-Staks and this is my favorite because you can take out the covered cups and put your drills, OMTs, etc instead. The best part about it is that when they're stacked you can open the drawer and have quick access to the tools. L-Boxes can't do that, you'd have to un-stack them then open. T-Staks have an option of being locked if you're not transporting them, a great feature and also if you want access to the contents in the T-Stak II or the Deep Stak. The L-Boxes?? Can't do that either. That's why my colleagues and I switch to Dewalt.