none they all suck! they'll run you all over town before you finally get to your destination! my brother has one and we used it once to see if we could get home a different way! well it turns out we went in a complete circle and the gps still couldnt figure out where to go! ive had several experiences with different gps makers and they all do the same thing, 1.run you in circles 2. has a hard time finding a route 3. they take you all over town and even then they dont know where to go! they are worthless, dont wast your money!