Strengths: fast response, portable, can run on battery, speaks street names

Weaknesses: screen gets fingerprints easily, does not display points of interest on screen

Summary: I have used this product for several days and am satisfied with most things. Not quite as sophisticated as my old Streetpilot 2620 as far as the display. I do appreciate how quickly it responds as far as loading maps and trip recalculations.

Strengths: Loads of features, easy to use

Weaknesses: Pricey, limited MSN Direct functions

Summary: The StreetPilot c580 is for the GPS navigation fan who wants it all. You get easy to use navigation, built-in Bluetooth, accident alerts and MSN Direct displayed on your screen. I previously owned a c530 with just the basic GPS features so I was really impressed that I could add all these features for about the same price I paid for the c530 just 9 months ago! The StreetPilot 500 series have a brighter screen and faster connectivity to the satellites than previous models. The Bluetooth is a safety feature if you own a Bluetooth cell phone. This enables you to talk hands-free while you?re driving. The MSN Direct is cool but is limited to only 4 functions: weather, gas prices, movie times and traffic alerts. A minor complaint is that the gas prices have a one or 2-day delay and are not necessarily current. This is OK if you are driving through an unfamiliar area and want to know ballpark gas prices. The MSN Direct is free for the first year and $50 for each additional year or $130 lifetime. MSN Direct offers a special $9.95 deal for 6 months after your free period, so owning the c580 will give you the first 18-months for only $9.95. If you go for the lifetime deal, the price is not transferable to another GPS should it become defective or if you upgrade to a newer model. The StreetPilot c580 is a feature-laden GPS that not everyone would need. With current prices, the basic StreetPilot 530 is $200 less than the c580. Whether you need all the bells and whistles for $200 is a decision only you can make!

Strengths: Super sensitive GPS receiver;MSN direct Traffic, Gas, Weather, and Movie Information;Compatible with many Bluetooth cell phones;Intuitive and user friendlyStrong window mount

Weaknesses: Dated Design,Only support MP3 format,Expensive,

Summary: Garmin is known to produce quality GPS products and the StreetPilot C580 is no exception. The GPS unit is basically the C550 with the exception of added MSN direct data service. With the same features and functionality of the C550, the C580 premium over the C550 is worth every penny. The C580 comes with 1 year of MSN direct data service, $50/yr after that. You can pay for the lifetime service for $150, but the service is not guarantee after 2012 according the MSN direct website. Within 20min activating the MSN direct service, I was able to avoid LA traffic and view gas station prices. Weather is a nice touch and the movie information is a bonus. MSN direct data service is also available for the Garmin Nuvi 680, but at a $300 premium. Bottom line: Accurate routing engine, intuitive user interface, good bluetooth cell phone computability and with the MSN direct data service, you got yourselves a road warrior's best friend.