I am just about to get rid of my truck which has built in sat nav.
I am looking to buy a system which I can input longitude / latitude and not just street names and post codes. I tend to visit a lot of remote places with work, which are not covered by a post code or on a main road. At the moment I find my desired destination on Google Earth and then enter the longitude / latitude in to my built in sat nav. So far, I have been unable to find a sat nav which will allow me to do this. I am sure there must be something on the market(?).