I don't have any swirl marks yet, but what are you doing to get them?? What do you use to dry off the car?? Or, when you wax your car what are you using to take off the wax??
I've only seen one navagation that works here, I think it was the pioneer or Kenwood (aftermarket of course). Other than that I haven't seen any stock nav work.
I don't think they will ever bring the nav dvd here. I understand that there are some features i.e. bluetooth and some other stuff. I just don't ever see it coming here unless you special order it like you did.