Howdy! Since you have a disco, how do these fit in the rear load space? How straight (vertically) are the inside walls?
I currently use "contico" boxes that Costco sells (they have two hinged lids the interlock when closed; lots of places sell them) and four of them fit near perfectly. The second layer is a little tight but still fits (I have three kids so I need a lot of storage.) What I don't like about the conticos is that the sides are sloped -- the bottom is smaller than the top. This allows them to stack, but it's annoying.