I prefer a long bed with an over the bed rail tool box, that is my idea truck, keep in mind the mega does have tons of storage under and behind the back seat, its almost enough to not need the tool box and just use those areas, you would then only loose the area under the tool box which I don't use that much. however I find the back seat room in the regular QC to be pretty good, I am 6'1 and could sit back there with no problems, I certainly would rather sit back there than any other sedan on the market including a cadillac