I use different sources,
I bought national geographic map for the adirondacks, which is very gOod, it includes trail information and leanto locations
I also bought a local set of maps published by a local society for catskill mountains, which is also very good, includes drinkavle water sources.
I have a usgs map for my quadrant, its ok, but their maps tend to be outdated, and only show major trails. Some of theiir maps are +20 yrs old.
I also use google/mytopo etc, and they tend to be hit or miss on accuracy,
When I look for new maps to purchase I try to look for local sources,
They tend to be the most up to date and detailed