I know this may not be related, but some commercial delivery companies offer GPS with travel planner when multiple destinations are involved and that is what the "next geneneration" GPS systems support. I do believe that after you get past the "flash" features like street names and big screens, the less published features like Bluetooth, multiple destination features, memory storage and remembering best "optimized routes" as well as on our motorcycles: weather resistance and rugged design usually drive you to the premium (read expensive) major brands like Tom-Tom, Garmin, Magellan models are your best bet, as size becomes a very "small" issue if you use it for business. JMHO having been there!