I buy this product for ~ $ 450 in Feb 2007 , and it work till now very well . we have travel extensively on the east coast and the west coast and this unit be a great accessory on we trip . but very recently the unit freeze , it fail to connect to satellite . upon further research I find that this be a very common problem and the only solution be to return the unit for repair . I be return the unit , since I be out of warranty they want to charge another $ 50 for repair but they waive it off . I do not expect such a expensive thing to get these kind of problem just after 1 year . and it be not just my unit , many other people be get such problem . even 660 and 360 have these bug .