I love a canopy on a truck. here's my 2010 screw with a 5.5 box.
it's a leer 100XL with a few options. keyless entry, 12v 3plug hub to battery(for fridge and fans), removable non tinted slider window for cab to canopy. cargo rails(only) I plan on a kickazszs light rack etc)
I love the look of not seeing aluminum around my windows. after a couple of years on my last cap, the paint flaked off and it was very noticeable on a dark grey and black truck.
here's a pic