Too soon to tell for me, Tom. But I sure made an investment this year! About 20 purchased last year, and my final tally isn't in for this year. About 150, I think. Considering your list, I don't think there's any chance I'll be a contender!
I think that joining this iris-nut group has had something to do with it!
(the CA drought has been something of a limiting factor - I doubt I'll be ordering more next year if we don't get some rain!).