I work across the US this GPS is a life saver. have a Magellan Maestro 3100. I should have checked other units before I purchased but it gets the jobs done. It shows me gas stations, hotels, restaurants. Few things I hate is that it does not pick up everything. I was looking for a book store I had to go online find the address then type it into the GPS. Another thing crappy that I am hearing about all GPS units is it will tell you to get off the interstate then get back on when 2 major instates connect, kind of hard to explain, you lose little time but it does get confusing.
You do have to be careful on the settings. I have the "Fastest time", "Most used freeways", and a few other options. I always use "Most used freeways" don't ask me why but sometimes the fastest time isn't always the fastest.