Using their past research, the staff at CR greenlights several GPS deals they have recommended, and which ones could be dead ends. Take the Garmin nuvi 660 (pictured above). It's a Consumer Reports top pick, and available for $400 (normally $800) at Best Buy this Friday and Saturday. Or a CR Quick Pick is the Garmin StreetPilot C330, available Friday at Wal-Mart for $129 (usually $168.54).
GPS shoppers can read (for free) the CR buying guide, here, or watch a video here.
[Source: Consumer Reports]