The Edge is a nice enough vehicle, however try to drive it with the back windows down. You will experience a "shake" like no other. The vibration in the vehicle is so bad the interior door panels shake visibly. Ford acknowledges the problem with a service advisory that states there is no servce at this time. The dealership wants nothing to do with your issue after they receive your money and the solution is don't try to drive it with only the back windows down. Ford states they will not set a precident on this issue with a trade in certificate therefore, your will be stuck.
Change the body style enough to compensate for the uncontrollable vibration