Can ask what the difference between the two is?

 

Im not an expert on this as I am rather new to dodges, but outside of the 730n maps being made by chrysler, and "voice commands" they are similiar. I went with the 730n after trolling a forum dedicated to the chrysler navi's and noting that the iphone worked almost seemlessly with the 730n and people with 430n and iphones had tons of issues. hope that helps