I was part of a test in 04 for Garmin usage by the company I work for. It went well and EVERY work day since then I have used one for 4 -5 destinations in a large area of Florida, these have inc oe units as wel as Garmin and I have found thru working with others something I agree totally with, If a GPS takes you to someplace incorrect, or down a road type you are not wanting to go on, It is almost always the person who programmed it's fault, He either set it wrong when he bought it, or he just programmed it wrong. I Have NEVER in 11 years had one take me to the incorrect place and the fault not be MINE. I love them, use them as I said Every day including weekends no matter where we go. Not just for the directions but also for the now supplied traffic info. Before I leave home or one destination going to another destination I hit the traffic button first, Saves me a measurable amount of time. GPS is one of the hightlights of our current century and like cell phones has changed the way we live.