Garmin, Magellan, Lowrance, Trimble, etc. all started in a GPS niche OTHER than the auot nav market. Garmin and Magellan are great for handhelds. Lowrance is excellent for marine. Trimble makes great survey/commercial application stuff. None of them view the auto navigation market as anything other than another product group in which to gain market share/business. I'm not saying that Garmins, Magellans, etc. don't have good auto GPSs. However, that's where TomTom started and have stayed, and after having Magellans and Garmins (a couple of each), the TomToms I got for myself and the wife are head and shoulders better for vehicle navigation use. Back country, marine, and project sampling are different requirements from driving down the road. I wou;dn't use a new TomTOm handheld, if they came out with one, but I won't put anything else in my truck, yet.