Box covers - flip/fold vs retracting and btw 2 rams

http://www.truxedo.com/edge/land.php

Have one of these on my 2012 Ram Sport. Just roll up for large cargo.

http://www.diamondbackcovers.com/hd/gallery.php

And a Diamond back on my 2013 3500, will hold 1600lbs. Great for haulin the quad, about 10 mins to remove to install fifth wheel hitch. Not good for hauling anything in the box that's higher the box rails.