I can tell you this, if you have any little ones you may want to consider the Invision system. I have the factory option and my little one gets sick everytime she watches it. I think because the monitor is too low and the motion of the vehicle makes for car sickness. Since the Invision is Horizon mounted in the headrests they will be less likely to be sick.

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2013 BMW X6M-current
2013 Audi S4-current
2007 BMW X5 4.8i (E70)-sold