The navigation is awesome. I missed out on the built in navigation as the Z was my first car, so I didn't know much about what I should get, but if I had to do it again, I'd get the built in navigation.

Hehe Thanks! yea it looks pretty sweet, the main reason why I chose the Nav is because the other version only put a compartment box there which looked kindda dull to me. I think if you install a screen on that area will definitely make it look even better