compare the features of each and see what you want.
i have the 260 w (w is for widescreen) and the thing is perfect. the only complaint that i have is that the battery doesnt last very long.
mine doesnt just say "in 2 miles turn right"
it says "in 2 miles turn right on elm street and stay left, then take the ramp onto route 1"
the directions are pretty detailed and the voice helps alot so you dont have to keep looking at the screen and taking your eyes off the road.
