Well with the recent talk of new Sat Navs being purchased for Christmas and all the thieving toe rags out there
The ring on your screen the Sat Nav leaves ...
It sits in a box in the house. So no ring to wipe up! (only so many times I need to be told how to get to work. )
Mind you I leave my snooper attached to the windscreen constantly
Don't have a sat nav, and have no intention of getting one.
My driving is pretty much to and from work occasionally, or round to friends/family places, so it's not like I have great need or desire to have some old bint telling me how to get there