I buy this as my first gp from Staples about 6 month ago and be generally very pleased with it . the pre-loaded Navteq map be circa 2005 as best I could tell . some of these unit have the mp3 player\/fm transmitter and some do not , even though the box indicate they all do . I have use this all over the country from Maine to California , and it have be useful and accurate 95-98 % of the time . in Los Angeles it be a near-godsend . I do have a problem in northern Maine , as another writer indicate , the Navteq map be generally lack in that area . this unit be a 12-satellite -lrb- stage 2 -rrb- reciever . customer service seem to be a problem for many , and Staples tell I they have stop sell these unit because they believe the company may be out of business . I find the interface reasonably easy to deal with , and the 4 '' screen size be a large plus versus most basic unit . unit take longer to lock up than a SIRFIII , but I learn to deal with that without much issue . do not speak street name but do prepare driver for turn well with voice command . do not have any battery for those who want a portable unit at time , the ViaMichelin x-930 or other unit do . multiple route choice be good , pous 's be fair . this unit be considerably heftier than many newer small and light GPS 's , but I do not hesitate to put it into check luggage because of its heft . perhaps the best testimony be that when mine be steal , I buy a refurbish unit -lrb- that I hope in fact have the mp3\/fm function -rrb- from a auction vendor , when I could have buy any number of new unit for $ 30 - $ 70 more .