I don't like how the handles are on the side for most of the packout boxes, and they're very bulky (what are those aluminum bars on the corners for?) and genera

I don't like how the handles are on the side for most of the packout boxes, and they're very bulky (what are those aluminum bars on the corners for?) and generally too big for almost all of my tools. Waterproof is nice, but completely unnecessary for me. I prefer the Tanos Systainer stacking boxes. They're small enough that each box can have a single purpose. For example, I have a drill, impact driver, charger, spare battery, and all of my drill bits inside one medium box (very heavy). In an XL box I have a track saw with its accessories, in a small box I have a jig saw, and in a medium box I made some wooden dividers for all my glue, wood fillers, and caulking. Makita makes some of the older-style boxes with 4 latches that often go on sale for very cheap on Amazon, but I prefer the newer T-lock boxes because you can open a box even if it's in a stack. But the T-lock boxes are insanely expensive, so I mostly have the Makita boxes. Both styles are compatible with each other.