Being both nearsighted and a cheap bast**d, I didn't like the size of the screen sand the cost. So I went on the Garmin site, I own two trail models and found that they make a model to work with your laptop. you throw the antenna on the roof via big magnet and turn on your laptop. It cost just over 100 when I bought it, and the misses and me love it. I can see where I am going and I have the same downloads the street gps has.

MM