I have not seen many posts with regards to navigation with maps, interested to find out peoples preferences. For around 6 years I have used Harvey Maps for most of my walking as they cover the main areas that I walk. Waterproof & lightweight are the main benefits. They include British Mountain Maps, Superwalker and my favourite the XT40 series, got to be the lightest map available. Must add that not many areas available in the XT40 series,but worth it if you're walking the area available.