The one disadvantage to ACA maps is that they are narrow "strip maps" - only about 5-10 miles wide along their routes. So, you can "lose track of the big picture" as far as your location goes - ex., I know I'm in Kansas, Dorothy. But how far am I from Auntie Em's/what direction is city X, both of which happen to be more than 5 miles off the ACA route.

This is not a "knock" on ACA maps. It's easy to work around, but requires carrying additional maps if that knowledge is desired.