My answer is, whichever one you are confidant in helping Elmer your friend.
I have used Digipan forever, Hamscope and DM780 as well.
I really liked the older version of Digipan.... sorry it's gone and out of date.
But when it comes to operating different flavors, logging and ease of operating I have become a fan of FLDigi.
I recently did a demonstration to new Hams of various modes and also CW, including logging and uploading.
I used FLDigi for most, except for FT8.
Again, use what you can explain. When we do "31 Flavors" again, I think FLDigi would be best. Just click and shoot :)
73 Art KA5DWI #2518