When you get an auto GPS unit, you are getting it to help make your driving experience as stress free as possible. Because of this, it doesn't make sense to put off learning about your GPS until you actually need to use it for something. When it comes to auto GPS units, the best place to learn about them is not "in the field", but rather well before you ever use it in your car. Learning how to use auto GPS units while you're driving is very dangerous, and should not be done by anyone. Not only is it more dangerous to learn how to use these GPS units while you're driving, but it also adds a gargantuan level of stress as you drive around in circles trying to find your destination.
Auto GPS systems tend to have a larger screen, voice control and a larger base of data. They are designed solely for vehicle use, as opposed to the regular handheld units. http://www.consumersearch.com/auto-gps/review
As all gps type electronics the connection is not as strong during a storm because of the clouds and the static atmosphere. However, the gps navigation units will still perform well.
Yes many products you will buy have consumer ratings, so you can know if the product is worth purchasing or not here is a link to a site that has some ratings for GPS units http://www.consumersearch.com/auto-gps/reviews
Cheap GPS units usually don't react as quickly as premium ones. Also, depending on the service, the cheaper ones do not have options to find food or entertainment.
the two greatest selers of gps units and systems are garmin and tomtom (magellan is also pretty reputable). i prefer using garmin out of the three units.
The cheapest GPS units include some of the Tom Tom units with less features. Top recognized brands on the market include the Tom Tom GPS and the Garmin GPS units.
The oldest GPS units don't have the capability to make use of the latest Garmin software.Some of it's designed to work on laptops with gps units.
Magellan GPS units are indeed made by the USA. They are, in fact, GPS systems made by the US government in the USA so Magellans are 100 percent USA GPS units.
Most GPS units won't charge you a monthly fee.
One can purchase cheap auto GPS systems at auto parts stores such as Autozone, Napa and JC Whitney. An inexpensive GPS system may also be bought at Parts Geek, Rock Auto, Parts Train and Auto Parts Warehouse.
There are several GPS navigation units. To name a few of the popular units: Tomtom, Garmin, Kenwood, Motorola, and Magellan. You can find a full list of the top 5 here: http://reviews.cnet.com/best-gps/
Garmin makes many different GPS units, so it would depend on which one specifically you are looking at. In general though, Garmin GPS units typically have average ratings on Consumer Reports.