Pickup bed covers.

:) Hi, I studied, long and hard, before buying my new truck, and now I have to study bed covers. I want a metal, roll up cover that can be locked in many positions. Reason for this is that I want to mount and run my generator in the bed of the truck while towing so the bed cover would be partially open at times. So far, I'm leaning towards a Retrax Pro. For my truck it would be model number 40371. [about $1700.00]



Any thoughts or experience on this or similar bed covers?