I've only had the car a couple weeks but wanted to share a little bit about it. Mine has the Nav system and at first i had no plans of getting that option. Now after having the gps map, and touch screen options for everything i love it. The handling and power of the car are exceptional. Mine still has less than 600 miles on it so i haven't gotten into it very hard yet.
The Nav system, the auto-link feature where it recognizes my cell along with the touch-screen feature for the phone rocks. The quiet, smooth as glass ride along with an acceleration rate that is jet like....I love it. Definitely get the Nav system...you'll be sorry if you dont.