After much research I chose this unit. But I think it was a bad decision.,.I also have a Garmen 755T for my other car.. The Garmen is by far MUCH easier to use..The ONLY positive about the 340 is, the maps are incredible(by far best in industry). But I'll take a less detailed map with ease of use anyday. So unfortunatley I have to advise do not buy the 340!!