I personally would only buy AKC. Registered Breeding Quality, even though they are only my Pets. When I was doing alot of reasearch to purchase my first Yorkie I came across alot of different Breeders across the US. (I'm from Hawaii originally and all dogs came from Australia and Registered w/the UKC.)
Being in South Carolina it's very common to see alot of CKC. registered Dogs mated w/ AKC. registered the Breeders try to tell you that you can still register w/ the AKC. but you cannot. I expect my Yorkie to look and act like a Yorkie without a doubt, I want to know what I can expect according to the Breed standards. The AKC. is very strict on their records but that doesn't garantee Good Quality Breeding?