About 18 months ago I bit the bullet and started buying Milwaukee Packout boxes.
Yes they're expensive but they're another level compared to all the other boxes I've had. So sturdy, so well designed and when you switch between vehicles as often as I do they make life a lot easier!
I've currently got 2 large organisers, 6 small ones, 3 drill box types, 2 with power tools in one with hand tools (problem with that one is the sheer weight of it- must be 30kg!) and a crate that I've modified to take a benchtop and a router table insert.
I've bought them all when they're on offer so overall I've probably saved a third off the retail price
wish I'd bought several more of the red ones when I bought those ... have had them years and survive well