Summary: This is my first GPS system so I did a lot of research online before I went ahead purchase it in March 2007. I wanted a large screen one and traffic system. 4500 seems to be the perfect match.
Pro: large screen, real-time traffic system saved me many times, and reasonable routing suggestions.
Summary: I got the unit for Christmas, attracted to the good display, but leery of the reliability, both due to other's reviews. I have no serious references to other GPS units, aside from one in an ACRUA MDX that was built into the console, and was very impressive.
Summary: The unit is very large and bulky. It does have a very large viewable map which is nice. The unit I had worked about 1 week then would not power up. I am completely dissapointed with this brand and unit and am trying another one.
Summary: I am very pleased with this GPS unit. I was alittle worried after reading some of the reviews, but am very happy that I still ordered it.
The graphics are by far one of the best. It has very detailed graphics, unlike many of the other brands that have a more cartoon look to them.