430N - Garmin based navigation, Bluetooth not built in (comes with connectivity package), can upload custom POI's with Garmin tool, can not voice control nav, nav button is soft key on screen, no split radio/nav display
730N - Chrysler nav, Bluetooth built in, dead reckoning, no way to upload POI's, can voice control nav, nav button is a hard key on radio, split radio/nav display available
The connectivity package gives you the steering wheel controls, USB port in console, and upgraded EVIC on both. On the 430 it also adds the Bluetooth stuff. It's not widely advertised, but the connectivity package on the 730 is much cheaper because the Bluetooth is built in. New the 430 is $1035 for the 430 plus $485 for connectivity. 730 is $1800 plus $160 for connectivity.
The 430 is a nice radio. I ended up getting the 730 because that was what my 08 had and it had features I definitely wanted.
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