That you will have to test for yourself.
Each person has their taste in what they like and do not like.
Tried some BirdsEye files with my 66s they are free to download.
I always go back to just using free openstreet maps or Garmin official maps for all my hiking needs.
Tried all the different things you talk about but in the long run it is just easier to use what I have in the way of maps not spend a lot of time on.
More of my time is spend putting together trips for user's to like.
Seeing that before this virus I was taking groups out to learn how to use a GPS Unit and kept it as simple as I can for the beginners.
But I do not take anything away from user's who like to make their own maps or convert different formats.
That is a user's taste one way or the other.
I have read too many user's here in this forum and other forums get themselves so mixed up and not understand what they are doing.
All I can say is try and what works best for you.
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