I now have the Garmin C330 and have been absolutely amazed at how accurate it is as well as how easy it is to use. I had an older version of the Garmin that was a nightmare to load different maps from a CD, at least for me. This one is eons ahead. I live in Lafayette LA and have been dodging hurricaines all Summer. Four of my siblings have houses under water. My brother lost his M3. He is a pilot and couldn't get back to New Orleans to save it. I gave my Garmin to my Dad who is 83 years old when he evacuated. He and Mom used it to find gas, food and lodging as well as alternate routes as they made their way to Morristown Tenn. from New Orleans. It was literally a lifesaver. Dad didn't want to give it back. Of course I let him keep it. I definetely will get another one. The only caveat is to have a copilot to input new waypoints when enroute.