Have had 6 different sat navs now form 4 different manufacturers and can quite confidently say that Tom Tom are still the best, but theres still room for improvement. It seems that people just don't take time to learn how to use there sat nav properly. Such as turning off the blue tooth if you don't want it to conect to your phone! On this unit I have had the problem with it locking out and the voice commands are sometimes wrong, but otherwise its been excellent. Keep updating via Tom Tom home and a lot of the problems like some of the data lost will be rectified. Not perfect, but still the best of the rest!