Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Easy to use and gets the job done.

I have been using the c340 for a few weeks now and it is a cool little device. The POI's are cool and it has just about everything. The maps are easy to read and the voice features are a necessity for me when I cannot look at the GPS. My only 2 complaints are just some minor niggles. It kind of has a funky shape that makes it a little harder to take with you. Also, the voice feature works well but sometimes tells you what to do a little too late (i.e. "take ramp on left to I-680 South" - about 20 feet before the turn which can result in you missing the turn if you cannot get over). To remedy this, just look at the next turn and you should be good. Like I said minor complaint.All in all an awesome little device. When I upgrade to a thinner model with Bluetooth it will DEFINITELY be a Garmin.