I have a Garmin 60CSx. It is outstanding in the field, and it works pretty well in the car. The screen is smaller than an automobile navigator, but it is easier to hold closer for viewing. Also you do not get voice directions, but that is not as big an issue as I thought. Entering addresses is a little more difficult, but point and pick entries, such as nearby restaurants, is very easy. Overall, I like it for automobile use. If I had to choose only one GPSr for both uses, the 60CSx would be it.