What he said. Nuvi 500. google or mapsource to download routes, waterproof and got mine at Best Buy for less then $200.

 

I had the Zumo 550 ahd loved it, but I wanted the bigger screen and lane assist offered on the Zumo 660, so I've since upgraded to the new model. I'm very happy with the 660, the boot up is faster than the 550, as are the screen re-draws, and the larger screen and improved mount are icing on the cake.