Don't waste your $ on a navigation system. Every cell phone company offers navigation inside a lot of its phones and you can just get something to put in on the dash. The cool thing about the GPS in phones is that it gives you traffic updates, accident reports and updates any new housing developments. I bought a car nav system and I have to get $400 cd's every two years with updated maps. The GPS in a lot of PDA's and Blackberries rivals those in cars now. They're going to put the nav companies out of business very soon.