adam277:
I used it for a year+ while at coop with no issues and I went proper out into the sticks at times and in central London.You just have to pair it with common sense and know when to ignore it. Like any sat nav.
I found it great though because I could modify the route which in effect let me make my own route up.
Imm often out in the sticks in Cornwall so set up the correct route but when I revisit the rout it for some reason hasn’t saved it