I go on about 3-4 cruises a year and tour the U.S. in my motor home and need routable maps for the areas I travel in. I am tired of having to input the coords for a Cache into my nuvi and then drive there, that is if I am in the coverage of my nuvi, otherwise it's dead reckoning.. I also do not wish to pay $100. for every state and country I visit. Any Help?