My picks dont reflect resent winnings, but the fact that Jumbo was thrown out...Those breeders that I listed are probably the best Jumbo breeders in the world..Well, in the koi world a breeder isn't really a breeder until he wins "Best in Size"...with that said I think each of the breeders listed has done that...But I think the best all around "Jumbo" breeder would have to go to Sakai Hiroshima, their track record is not only long in Japan but all-over the world.