04-13-2010, 08:49 PM
Make sure you get one with the "regions" you will be visiting (now and in the future). Also, these things don't pick up satellite signals real well in places like... downtown Chicago. 
One of my main grumps is that when I ask it to calculate by shortest time, it does not understand that the shortest time during 1 oclock traffic is NOT the same as during 5 oclock rush hour traffic. Don't blindly trust the thing 'cause as soon as you do, it'll have you do something really assenine. It also has no idea what roads and hiways have changed in the year since it was last updated. Sometimes that's major (on the way to Disneyland!)
Overall, they do a great job but be ready for the hiccups!
One of my main grumps is that when I ask it to calculate by shortest time, it does not understand that the shortest time during 1 oclock traffic is NOT the same as during 5 oclock rush hour traffic. Don't blindly trust the thing 'cause as soon as you do, it'll have you do something really assenine. It also has no idea what roads and hiways have changed in the year since it was last updated. Sometimes that's major (on the way to Disneyland!)Overall, they do a great job but be ready for the hiccups!