I prefer maps to plan routes then switch to satnav for detail near dstinatipns.
Early this year I bout a 2017 atlas in a services.
I sorted a short run on a weekend away not long after but told the others...
This is next years atlas so some roads may not exist yet".
When doing some work for Mori I used satnav to find some of the put of the way addresses in very rural areas. For some reason they gave these to me..along with some in rougher areas of towns.