I'm thinking of buying a used AVIC-N2 with the ipod connector. I have this setup with my wife's AVIC-D2, but the screens are very basic and not as good as the newer models. Does the AVIC-N2 display the more advance screens? Or should I opt for the AVIC-N3

N4 obviously is the best and biggest. The N3 will still give you the better XM display and ipod than the N2