MS S&T refreshes per 12 seconds. stupid M$.
But there is a patch to change it to refresh every 1 second.
Google it by yourself. It also applies to MapPoint.
I have not tried Streets Atlas, but the looking of the maps is worse than S&T.
Maybe I am just used to S&T.
在车上和GPS连偶用的是Delorme,有turn by turn voice navigation,这点比MS streets