TomTom XXL 540TM World Edition + Case for $169.99

I'm a big fan of TomTom in general since I got my first unit back in early 2003. They have the most features and show the most on the dashboard so that I know everything I need to know at a glance. The 540 series is better than the 550 series because it retains most of the advanced features, while the 550 was dumbed down to attract the Garmin crowd with a simplified interface (which you can turn on with the 540 anyway).