I have been unhappy with the typical auto GPS units sold. I've owned a Garmin and a TomTom, and both have proven to have questionable reliability. In both cases they have routed me to places that were totally off course. In Florida, I wanted to go to Gainsville and it kept insisting I go to Disney World????
So, I decided to try a Garmin GPSmap 62s. This unit is terrific. It picks up the signal quick, even hiking in the woods. It runs on batteries for many hours, so I can use it without being dependent on a power supply. It comes with a base map, so you need to add the Garmin road map for the USA. I bought it on sale for $300 at Gander MTN., and the road map was an additional $75, but it works great. Its waterproof. It does turn by turn navigation. You can add extra maps or custom maps. It has a compass, altimeter, trip computer, and many other features, some of which I haven't even tried yet. Its full of all kinds of POI's. Garmin sells a motorcycle mount for it, which I will be getting soon. If you want something better than the $100 consumer models at Best Buy, I'd highly suggest you take a look at it.
So, I decided to try a Garmin GPSmap 62s. This unit is terrific. It picks up the signal quick, even hiking in the woods. It runs on batteries for many hours, so I can use it without being dependent on a power supply. It comes with a base map, so you need to add the Garmin road map for the USA. I bought it on sale for $300 at Gander MTN., and the road map was an additional $75, but it works great. Its waterproof. It does turn by turn navigation. You can add extra maps or custom maps. It has a compass, altimeter, trip computer, and many other features, some of which I haven't even tried yet. Its full of all kinds of POI's. Garmin sells a motorcycle mount for it, which I will be getting soon. If you want something better than the $100 consumer models at Best Buy, I'd highly suggest you take a look at it.