Aftermarket Bed-Mounted Tool Boxes

[badpeanut]

I have a painted steel over the bed rail tool box with two side opening doors on my truck, but it has seen better days.

For those who have tool boxes, what fits and looks good on our trucks?

Do the single lid tool boxes clear the cab light?

Are the single lid boxes worth the premium over the two lid boxes?

The tool boxes that sit flush with the bed rails look nice and don't block the rear window, but do they prevent you from hauling a few sheets of plywood with the tailgate up?