I like my Zumo 450. I have had it for 7 plus years. I can map out a route turn by turn using MapSource and plug it into my computer and load the route into it. It also records your "tracks" that you can upload and see every move you made. Right down to turning around in a parking lot.
It wasn't cheap, but that is what I wanted. I don't want the unit choosing my route.
We put a nice large screen Nuvi on my wife's Valk. She follows me, some times at a distance I am not comfortable with. I figure if we get separated, she can at least find "Home".
