[maci_mace]

From talking with my breeder here is what she looks for in a stud:
She prefers sires who have championed or are active in the ring earning points and reserves consistantly.
Her females are never under 5lbs, males are never over 5lbs. This ensures that most/all the puppies will fall into the standard weight of 7lbs and under.
Her females all have perfect silver/silky coats, straight legs, and a great disposition. So when choosing a male he must also be to the perfection of the standard in which he is registered. Silky, silver, 7lbs and under, etc.

I think the most important thing after passing all health tests, are his registration papers and that he fits the standard 100% including weight. You'd be surprised how many 1 yr old yorkies end up in shelters or being rehomed because they aren't silky, silver, got too big, etc. People see pictures of a standard perfect yorkie and that's usually what they desire. I would love Maci if she was purple and weighed 30lbs. But not everyone is that way.