I really don't see how it is possible to find a reputable breeder who is breeding a yorkiepoo. Because one of the defining factors of a reputable breeder is one who is breeding to improve the breed. There is now way to make a better yorkie by crossing it with a poodle. Most people that are breeding this way are doing it for money, and if money is their only motivation then I really doubt that they spent money on testing and other important things to insure a healthy mom and litter. Good luck with your search and decision.