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Does size matter?
Portability is not an issue with factory-installed systems, of course, but it is one of the calling cards of the standalone and cell-phone navi system. Nothing beats a cell phone for portability, but trying to decipher a map or update travel routes on a tiny 2-inch screen and mini-keyboard is tricky and potentially lethal (after all, you might as well be texting-while-driving).
Generally, we think that screens should be at least 3- or 4-inches and speakers should be able to emit directions loudly and clearly. This means that most factory-installed and standalone portable units will be decent for visibility, but think twice before relying on a tiny cell phone GPS program if you drive a lot. Bigger screens also tend to be touch-sensitive, which means they're a lot easier to navigate if you're already on the road.
Size is also something to consider if you're parking your car in, shall we say, less than secure areas -- a candy-bar-sized GPS unit will fit in a handbag or briefcase a lot more easily than a bulky, grapefruit-sized one. We suggest checking out the actual size of devices and screens, along with sound quality, at your local electronics store, even if you plan to buy something online.
Portability is not an issue with factory-installed systems, of course, but it is one of the calling cards of the standalone and cell-phone navi system. Nothing beats a cell phone for portability, but trying to decipher a map or update travel routes on a tiny 2-inch screen and mini-keyboard is tricky and potentially lethal (after all, you might as well be texting-while-driving). Generally, we think that screens should be at least 3- or 4-inches and speakers should be able to emit directions loudly and clearly. This means that most factory-installed and standalone portable units will be decent for visibility, but think twice before relying on a tiny cell phone GPS program if you drive a lot. Bigger screens also tend to be touch-sensitive, which means they're a lot easier to navigate if you're already on the road.
Size is also something to consider if you're parking your car in, shall we say, less than secure areas -- a candy-bar-sized GPS unit will fit in a handbag or briefcase a lot more easily than a bulky, grapefruit-sized one. We suggest checking out the actual size of devices and screens, along with sound quality, at your local electronics store, even if you plan to buy something online.
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