After the amount of orders that came through on the ASH1. I'll place my bets on it has the actual most sales of a production knife that came from Busse combat.
plus it was up for over a year. back in the day, not to many people had heard of Busse, but it is now the ultimate in survival, combat, collectable knife. I think the ASH 1 is a great knife that has the look of the original line, but the steel and handle options that represent the New Busse concept of marketing.
I think if it came back though, the Steel heart II or Fusion steel heart would have as many orders... maybe.