I bought one this past Friday. I went on a 500 mile trip on Sunday and the unit was not that good for navigation. It takes to much effort to figure out. My destination was Dallas. Took at least 2 wrong turns because of the unit not zooming in to detail when you got close to the exit.(Yes, settings were correct) Took at least 1 wrong turn because it could not change the mode to track up. (figured this out when i got home, it has to be in 3D mode to be in track up - not sure why.) Took all these wrong turns because it the volume is too low even when it is turned up all the way. (Both set
