I have a Tom Tom One that I like a lot. Not a lot of extra bells and whistles, but an easy to use interface, and generally good routing. Note that some of the higher end TomToms now have the ability to route based on information returned from users on actual travel speeds on different routes. The One does have the ability to do minor updates on the maps for streets that no longer go through or name corrections -- individuals can send in corrections, which are then incorporated into the map when you connect it to your computer.