Pioneer just recently announced a new in-dash GPS navigation system called Pioneer AVIC Z120BT which has a 2-DIN form factor and has a 7″ screen.
This is apparently their new flagship model which now adds the ability to listen to Pandora in your vehicle - but it actually streams the data through your iPhone using Pioneer’s own PandoraLink app for the device.
Pioneer AVIC Z120BT has all sorts of audio/visual specs but as far as GPS navigation it runs on TeleAtlas maps which covers all 50 U.S. states and Canada, has 12 million POIs in its database, and more importantly implements a voice recognition feature so you can enter addresses just by speaking.