Morn'in shooters,
The following is just IMHO, but I do not like any of the hinge top boxes I have used. Just don't seen to last.
Some like the last batch of Midway boxes shattered/broke when dropped. Not impressed with that.
Therefore, I go to the "slip-top" boxes. There is also more ability in these boxes to except loads of differing lengths.
Have problems keeping the tops on when you pick up a box full of loads?
NO PROBLEM! Just get yourself a used bike intertube at the local bike shop and cut yourself some rubber bands. NO MORE PROBLEM!
Keep em coming!