Look at the Kenwood top of the line series. Had one on Cadi srx and was very stisfied with bluetooth and back up camera. As a bonus, Garmin gps used in system!
2014 335ix GT Lux,Cold Weather,Driver Assist,Driver Plus,Premium, Technology. Gone 2013 X5 Premium,Active Cruise,HK Sound. Gone-'08 BMW 535xi Sports Wagon Space Gray,Black Nasca Leather,Cold Weather, Premium,Comfort Access ,Vented Seats,Multi-Contour Seats, PDC, Nav, Logic 7 Sound, 2002 X5, 1972 2002.