One of my boxes is a KRL three bank models.....and it is so full that I had to buy another Snap On box for the overflow. The danged box is so heavy, it is difficult to move and like a big ship, hard to turn and stop. The two bank models are probably the best solution....have multiple boxes. Of course, one advantage of the big box is the fact that stealing it requires a fork lift. And, when I die, it can substitute as a coffin.