[a_c_s]

I have Sprint Nav, Garmin and iGo 8...haven't tried Tom Tom although I do have a standlone Tom Tom unit...I actually like Sprint Nav, but as somebody else stated, you do need a data connection to use it...Garmin and Tom Tom can function with either aGPS or pure GPS, meaning they are not data dependent, unlike Sprint maps...pros and cons to both...Sprint maps in theory never needs to be updated because you always have the most up to date maps available over the web as you drive...the others are downloaded to a card and may need periodic updates, but also are not reliant on a data connection to function properly... I think Sprint Nav does tell you the next direction at the top, although I don't have it in front of me this sec, so not positive on that... in general, I tend to use Garmin XT... it has a really slick interface, including arrival time and a pretty spot on speedometer, as well as the speed limit off to the side on the road you are traveling on...