I took a ACA trip this year. They provided the maps to us for the route. The guides picked where to stay and where to buy food, so we did not look at the maps for any purpose other than route. Before the trip, I downloaded off of their website the GPS data for the route and saved that to my computer and loaded that into my GPS.

It was great having their route in my GPS to tell me where the turns were, etc. I stopped looking at their paper map after the first day, as the GPS served my needs quite well.

I need pretty good prescription glasses to read fine print on a paper map. To look at paper maps, I have to stop and put on different glasses. I can wear sunglasses or sunglass/reading glasses to read the larger print on my GPS. Thus, I have a strong preference for having the data loaded into a GPS on my handlebar which I can read while rolling.