Most Punctual
Impress your in-laws with precisely timed arrivals—the TomTom Go 930 estimates the duration of your trip based on how long it took other TomTom users to complete the route, rather than relying on road-speed ratings. If the GPS signal becomes weak, fancy internal motion sensors keep track of where you are. The system can also control your iPod and beam tunes to your radio (with a $30 adapter). Bonus: If you don't like the tone of the included voices, you can record your own. $500; tomtom.com