I have NTG2. Should I upgrade to NTG2.5?
I have a G320 CDI from 2008 with NTG2 and Harmon Kardon. I also have Viseeo MB-4 installed. Everything works fine.
What will I gain if I retrofit the NTG2.5 unit. Is it just a nicer user interface and a built-in dvd changer? - are the maps better with the NTG2.5 with a more contemporary look?
I know that I along with the head unit have to change the ampifier also.
Should I or should I stay away?


