how do you like the tomtom one 125? how are the voice directions? can you turn the audio off and only have the map and text? i work on an ambulance and the voice directions may be irritating for some patients. also, is the map screen like others where it shows where you are and shows you on the map as well as in the dirctions where you will turn next with actual street names and everything? and do the voice directions tell you the name of the street you will turn on? not just how many feet or yards it will take you. thanks!!