Went to Louella in the 80 ties and bought about 6pair of Jan of arandonk and 4pair of Imbrechs paid a pretty Penny for the best ,bred from them that year ,the young went down like snow of a roof ,but the young we had Left bred from them the next year ,and they produced the goods some guys may remember (safe bet -super Blue - white beak)sold back to louella .could be doing with some of them now .So I believe that it's the 2nd Generation that produce the quality racers.you pays ur money u take ur chances.