Summary: The Magellan 4700 has a lot of neat features which my older Garmin did not have, but at least the Garmin didn't continually mistake driveways for state highways. Obviously the map data base is lacking in accuracy.
Summary: I just switched from Garmin because my Garmin 1490T would reboot constantly, stutter badly when speaking and the keyboard was slow and unresponsive. That said the Garmin is light years ahead of this unit in terms of features.
Summary: We purchased this after returning a Garmin 755T (which I also reviewed) because we had terrible routing issues with that unit. We then took the same test trip with the Magellan that we took with the Garmin to Myrtle Beach.