Garmin Nuvi vs Magellan Maestro

Overview
Garmin and Magellan are two of the industry leaders for Global Positioning Systems (GPS). Two of the most popular choices for automotive GPS units are the Garmin nuvi 1450 and the Magellan Maestro 4700.
Price
Prices for the Garmin Nuvi and the Magellan Maestro are typically in the same range. The Garmin nuvi 1450 and the Magellan Maestro 4700 have identical suggested retail prices as of January 2010.
Size
The Garmin nuvi 1450 is sleek and has an ultra-thin design with a display screen size of 4.4 inches by 2.5 inches. The Magellan Maestro 4700 is just .6 inches deep and features a widescreen that's 5.2 inches by 3.46 inches.
Maps
Both the nuvi and the Maestro use the NAVTEQ mapping data. The Maestro 4700 has preloaded maps of Canada, Puerto Rico and the United States. The nuvi 1450 has preloaded maps of North America with the ability to upgrade and add maps.
Navigation
Both models will speak the street name and direction of the upcoming turn. The Maestro has a feature called "Multi-destination Routing" that gives the ability to plan a trip with multiple stops while still traveling the most efficient route. The nuvi has navigational options including fastest time, shortest distance or off road with the ability to add stops, or "via points," once the destination is chosen.
Battery
Battery life for the nuvi is up to three hours with a rechargeable lithium-ion. The Maestro is also up to three hours with a Li-ion rechargeable battery.
Unique Features
Garmin and Magellan have both developed features that make their GPS unique. The nuvi features Garmin Lock that serves as an anti-theft feature. The Maestro has Predictive Traffic Routing that automatically provides traffic information and can help you avoid delays.