Originally Posted by fly yellow

I like the factory Nav. It has a great ipod interface and there are settings (like delayed headlights) that can only be adjusted with the Nav. The aftermarket systems are great, but they can be a bit of a challenge to install in the touring model. They are much easier with the base. The factory Nav also works great with the steering wheel controls. It is the exact same set-up as the G37 except it doesn't have the rear-view cam.