The TomTom One 140 S benefits greatly from feature trickle-down, bringing high-end features to an entry-level model without much price bloat.
The Sony NV-U44 offers a few useful features that competing manufacturers have not yet implemented on their entry-level models.
Sony has positioned the otherwise good NV-U84 GPS device in an odd spot, where it's not as good a value as the models immediately above and below it in the NAV-U lineup.
The Sony NV-U83T is a seemingly attractive in-car GPS with a large display and useful navigation features, but it shows its ugly side with poor directions and subpar performance.
The Sony NV-U70 is a solid in-car nav system for the GPS newbie, offering ease of use and accurate directions, but you can get more for your money from competing products.
Pricing not available