The first thing I will say about the Nav System is it makes the interior look alot better. Sirrus in my opinion is the best Satillite option. My dad has XM and my wife has Sirrus. Sirrus is way better. The Nav is incredibly easy to use, it is pretty simple stupid. I havent downloaded any music or my IPOD stuff yet, but when i get some quiet time on the weekend from the kids ill play with it some. So far I really like the Nav Stuff mostly cause of ease of use and looks. My only complaint about the electronics stuff is the stereo doesnt turn up loud enough to me. Sometimes I like a very high volume. It is crisp, but not really loud.Many congrats sandman! Your making me want to chose the GG as well. You got the thing fully loaded I see. Could you let me know what you think of the Music server and Navi option? I don't know whether to get it or go aftermarket...