Both sides can answer this. Do you have different groups of ATF's? ATF is such a generic term. Do you have different classifications for your favorites? How do you define ATF?
Hobbyists-
Is it a provider you see a lot? Go to women? One you really seem to click with? One you do other things beside bcd? Do you know a lot about each other? other suggestions?
Providers-
Same as above? One who buys or does things for you? Is an easy session for you? other suggestions
ATF is used so often. I get told, I use the term "friends" too much. I know both sides have lists of people they like or don't like, but wonder if you divide those lists into separate groups. I've read of one description called flinde's "harem"( which I assume are his ATF's).
Know some will probably have to watch how they answer because of attacks from both sides.