Both sexes are great....but I do prefer Buster(male). Rylee(female) is sweet, but she cuddles when she wants to....usually she is off doing something. Buster, on the other hand is my most devoted one. He is wherever I am. he even watches me while I shower and scratches at the glass door. Each yorkie is an individual though, and you should base it on the puppies' personality. Hope you find your perfect pup!