I feel that its not worth spending the extra $$$ on an in car Nav when there are so many dash top models out there. Im on my 3 different one in the past 6 years. I love the fact that i can move it from car to car (rentals while on vacation) and also if it ever has a problem i dont lose my car for 4 days while the dealership is fixing it. Also why pay for it for 4 or five years?? Just my 2 C. Dean