I have been all over the world using different brands and models. For the money the TomTom seems to be the best. I have had the 700 and the 720, and their newest feature is the lane designator. Instead of just telling you to move to the left or right it tells you which lane you need to be in for your next move. Very cool stuff. You can get traffic updates and weather reports live if you wnat to subscribe to their daily support, but I find that to be a bit overboard for the most part. With TomTom's you can choose the language, the accent, and even the gender of your navigator. The thing I am waiting to see is a navigator with a sense of humor. That would be awesome if she can tell you that you missed your turn dummass, now go around the block you idiot. Want me to drive for you as well moron? That would be just way too cool, especially when you have a guest in the car.
Unfortunately for me TomTom's do not work here in Korea, so we have to find an alternative for our stay here. Everywhere else that I have been the TomTom's work great.