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In order to choose the best GPS, a good starting point is understanding what they can do, what they can be used for, and then matching that to your specific needs. At the time of writing, there are three basic kinds of GPS unit on the market:
handheld GPS for pedestrian/bicycle navigation;in-car GPS for automotive use;integrated GPS (i.e. in an Apple iPhone, or a wristwatch).Essentially, all of the above do the same basic thing - they use satellites to locate the unit, and match that with maps, displaying the result to the end user. Extensions to this functionality include route mapping, back-tracking, and storing information about the current journey.
It is these extensions which determine the use of each kind of unit.
Handheld GPS for Geocaching and Navigation
The most basic units, manufactured by Garmin and Magellan, tend to be low cost, with basic screens - some without maps - and are for recreational use. Navigation is usually by indicating the distance and direction to the next point (which could be a Geocache, for example.)
A sub-category includes specific GPS units for cycling, golf, and fishing.
These would be the best GPS solutions for people who need a low cost device, limited in mapping, but with basic navigation capabilities.
Handheld GPS for Trekking and Route Planning
For those who love the great outdoors, mapping is a must - both for planning routes, and tracking against planned routes - and the best GPS units will have the possibility to add maps, as well as import routes planned using services such as Google Maps.
They will be a little bit more expensive, but the additional cost lies in:
larger, color, touch sensitive screens;rugged, warterproof designs;advanced mapping, ability to upload additional maps;more features for marine use, geocaching, and logging.Again, there are specific devices for cycling and they can usually be bought in packs with additional maps. One thing that they are not good for, though, is in-car use; the best GPS units for automotive applications have the screen oriented horizontally and include voice control.
In-Car GPS for Automotive Use
Those familiar with GPS units will have heard of TomTom and NavMan, but there are plenty of other manufacturers. Choosing between them will usually be a question of cost versus map features, accuracy and reputation.
Things to look for when choosing an in-car GPS include:
large screen;voice commands / voice control;fast address look-up and satellite location;map updates.This last is important because roads change quite often, and there's nothing worse than ending up being directed down a one way street when you're already running late thanks to high traffic and unfamiliar surroundings!
Device Integrated GPS
The last category includes GPS and software that is included in cell phones (such as the Apple iPhone) and tablet PCs.
If you are only looking for a casual solution - for occasional use, or non-specific use, then an integrated solution might be the best one. In fact, it might even be that your current phone has GPS capabilities, and all that's needed is to buy the app and download the maps!
So, before walking into a store and attempting to choose a shiny new GPS unit, it's worth checking the capabilities of the various devices that you already own.
Guy is an experienced author and writer on all manner of topics. He has written a number of books and hundreds of articles.
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