I have heard nothing but great things about the Tom Tom GPS unit that is out there and I currently have the garmin which sucks when I go to NYC and elsewhere in the NE. This makes me just want to get a Tom Tom even more now.
http://www.youtube.com/watch?v=2ljFfL-mL70&feature=player_embedded#!
http://www.youtube.com/watch?v=2ljFfL-mL70&feature=player_embedded#!