ATF should obviously point to the last best provider, but the first resonates. I will go in chronological order, as each was in some unique way "better" than the one before: Pink (Aries), Mimi (Aries), Judy (Chun), Kelly (NDS/VIP), Hannah (EG309/BSS) and presently Mocha (Chun). If forced to pick one, I would not, could not! If this were an All-Star team, the MVP would probably be...Kelly. For the ATF purists, that makes Kelly the ATF, but two subsequent contenders are still active in this market, so the title is in contention!