"Works really well but mount can be a problem"4.5 starson by cjc1103
Pros: The 330S has a very nice, responsive, touch screen, and has an intuitive user interface with large icons, and 3D map mode. Lots of trip progress information. Navigation is very accurate, also gives you plenty of warning for turns and lane changes.
Cons: The built in mount is hard to attach to the windshield without inadvertently removing the GPS unit from the mount. Reattaching it is not so easy. Startup and acquiring the GPS satellites is a little slow. Power plug is recessed and hard to attach.
Summary: The built in mount is my biggest complaint, but it is also a plus since it is attached to the GPS and therefor harder to lose. Also once you dettach it there is no telltale mount for thieves to see - they'll break into your car to get the GPS if they see the mount. Volume can be turned up loud enough to cut through the stereo. The LCD touch screen is beautiful, with a 3D map mode, although the map lines can be a little jagged, but that doesn't bother me. It's easy to program, has intuitive user interface with large icons. A quick tap on the map puts you in the menu system, select "Navigate to", then "Favorite Destination", scroll down, select, your in business. Entering in a city and street address is easy too thanks to a nice virtual QWERTY keyboard. It has a predictive entry feature that recalculates after each keystroke, so often you don't have to enter the whole street name. I really like the trip progress information on the lower part of the screen, including distance to the next turn, time to that point, total time left in the trip, the current time and ETA to your destination. It also shows you the GPS signal strength, your speed, and the speed limit if it has it in the database. If you go 5mph or more over the speed limit, the speed display turns red. The ETA display is based on the speed limit for the roads to be traveled on your trip. I set up the GPS and monitor it on long trips even when I know the route, because of the continually updated ETA. If you make a wrong turn, recalculation is fast - about 5 to 10 seconds. Overall I like it better than on the Garmin unit my Dad has.