I just got the Z1 (7" screen, double din ;( )which is sooooo cool! 30gig hard drive, 20 gigs for Nav info and 10 for music which it can rip off of CDs, improved iPod interface, animated Sirius interface, voice command Nav/phone/cd, and the best part, Bluetooth enabled to auto mute, answer and dial the phone. There is also a double din D2 now that is essentially the same as the N3. If anyone needs any of these units, email me and I'll let you know what price I can get all of the above units for.