"Go with the 350"3.5 starson by sq1972
Pros: User friendly, Portable, Long Battery Life
Cons: Bluetooth causes unit to freeze, Expensive, X-tra $130 for FM traffic
Summary: I shelled out the extra $100 to get the bluetooth functionality, but it caused more problems than it was worth. I first linked my wife's LG phone to the unit, but it could not open her phone book so all outgoing call have to be dialed on the phone's keypad. However, when I linked my motorolla phone to the unit, the phone book appeared on the 360 and I was able to make calls. The first call worked fine, but the second one caused the unit to freeze requiring a hard reset. Each time I tried using the phone function, it worked for the first call but froze during the second--which is a problem if you are driving in an unfamiliar area and need to rely on the map.
It would have been nice to have the phone function particularly because when you search any of the millions of points of interest (which came in very handy during vacation in southern cal), aside from full address info, you get a little phone incon on the screen that allows you to directly place a call to the point of interest without having to whip out your cell.
Aside from the phone glitches, directions provided are perfect and it works well with the FM traffic receiver to rout you around trouble spots if you are in a large metropolitan area (chicago for me). However, the traffic receiver is a separate connection makes for too many wires. I'm trying to decide whether to save a few bucks and go with the 350 since the phone function is useless or to spend a bit more when the 660 comes out in a few days which hopefully corrected the bluetooth bugs and already has the traffic receiver built in (only 3 months free though compared to the 15 month deal you get with the separate antenna).