dude i sell those things on a daily basis....the traffic is not worth it. the updates are every 15 30 minutes and their not really that accurate...you also have adds that pop up in the middle of your route. they go away after a few seconds, but they can get annoying. you also have to register your unit to start the service so it can get a lil annoying.

id honestly recommend going with a tomtom, either the 350t or 350tm. the T is their traffic version and their TM is their traffica n life time maps version. The TM is about 30 dollars more then the T it will run you about 229. the traffic feature on the tomtom works on the surface streets as well as major highways where as the garmins are only on major highways. honestly tomtom is a better investment.