I have two Waterloo Magnum boxes in my garage (two each of MG4610 and MG4612). They are great, and as said, the same as the Craftsman Pro except with a different lock style on the front. I've had them for 6 years now, and for my garage, they are solid. With that said, they are both full. Buy as big of a box as possible! When the time comes, I'd consider buying the Magnum's again, but I want MG5610/MG5612. Those are longer AND deeper.
I think the Craftsman standard ball bearing versions are pretty good. I find them a little shallow though. Keep an eye out, they always seem to go on sale!
Joshua