I have a 2016 FR Sunseeker MBS with the Jensen Radio/Navigation system. It is very difficult to use the GPS and it has many mapping errors. I downloaded a mapping update and it had the same errors. It directs me to a county road running parallel to an Interstate, it posts a 50 MPH speed limit on an Interstate posted at 70 MPH. Basically the Jensen unit is junk. Can you recommend a different Radio/Navigation system that will fit where the Jensen unit is in the Mercedes Sprinter dash?