Originally Posted by NY_Joe
430 - Garmin
730 - Navteq (I think)
Both use Navteq data base with the high (future) cost of upgrade which is a pity because a pure Garmin GPS system uses Garmin maps and a lifetime upgrade costs less than a one time Navteq.
The 730N is a Harman Karden unit with integrated Uconnect module and is sourced from Becker. The Map display is much nicer unless you like the "cartoon like" Garmin display and the user interface/menus are less intuitive. It also features "bread crumb" mapping and ded reckoning when sat signal is lost. It also features Sirius Traffic which the 430N does not have and voice commands for nav while in motion although using the voice control for nav is slow and frustrating in the extreme.
The 430N is a Mitsubishi Electronics sourced unit with a Garmin interface and a separate Uconnect module.
I have a 730N in a 2008 WK and a 430N in a 2011 WK2 and I chose the 430N for the 2012 JKR because the features of the 730N were not worth the extra premium to me.
2011 Jeep Wrangler - Media Center 430/430N (RBZ/RHB) - YouTube
2011 Jeep Grand Cherokee - Media Center 730N (RER) - YouTube