Does anyone have any exerience or knowledge with the Nuvi 500/550? I have been looking for a unit that will do what my 255w will do for the street but I am wanting something that will be good for offroad also. I emailed Garmin and they suggested the Nuvi 500. It sounds like what I want but it has a smaller screen than my 255w. What do you guys think?

Thanks,

Jim.........