How to Compare Portable GPS Navigation Systems
According to "USA Today," United States consumers alone purchased more than 15 million GPS units in 2008. An ever-expanding range of products makes it essential to compare portable GPS navigation systems before buying.
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Types
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Portable GPS systems come in standalone hand-held and fitness units, automobile units with optional dash-mountable accessories and GPS applications that you can add to an existing cellular phone.
Size
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Hand-held and fitness GPS units are generally the smallest, with size and weight kept to a minimum to keep them easy to carry. Most automotive GPS units, such as those made by Magellan, TomTom and Garmin, are heavier, averaging 5 to 10 ounces, with screens measuring 3 to 4 inches on the diagonal.
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Features
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To compete with smart phones, GPS manufacturers are including MP3 players and FM radio capabilities on newer models. While these are nice features, a unit's text-to-speech functions, audible navigation, traffic routing, points of interest, battery life and Bluetooth capability remain the most important features.
Price
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According GPS Review postings, as of 2010, most mainstream GPS manufacturers offer entry-level units for less than $100. Refurbished versions are found for considerably less. Higher end units run from $300 to upwards of $1,000.
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References
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