Manufacturers

Popular GPS Manufacturers and their models are:
Garmin
Garmin nuvi 200 GPS Navigation System
Garmin StreetPilot C330 GPS Navigation System
Garmin nuvi 680 GPS Navigation System

TomTom
TomTom One LE GPS Navigation System
TomTom One 3rd Edition GPS Navigation System
Tom Tom ONE 3.5" Portable GPS Navigation System
TomTom One XL GPS Navigation System