The guy that I work for gave me a Garmin 560 to use, it's really pretty cool... all the bells and whistles of color maps, airport diagrams, XM weather, etc... and when you get in a rental or crew car it switches over to "car" mode... which is just like a normal car GPS telling you what restaurants/hotels are around. It's a little expensive to buy personally, but pretty cool. I think the Garmin 500 is cheaper because it doesn't have the XM weather.