Questions about Navi..
http://www.eclipse-web.com.au/
I think the navi is worth it, but it's also being able to play a DVD and show it to the kids in back. Also, the premium sound system, MP3, etc.
I wouldn't try to go with COMAND nav...the dealership will rape you for the COMAND and the install. I would go with a portable Garmin...that is the most cost effective option and an overall better navigation system than COMAND. COMAND is counterintuitive, while Garmin is simple stupid and a touch screen.
I have Garmin Nav in all my cars (one portable and two part of Kenwood DNX8120 HU). If you want just straight Garmin nav, you can get one for around $150 to $160...I got mine at CompUSA. Just because it is relatively inexpensive doesn't mean it doesn't do the job...Garmin FTW.
Good luck.


