I say none of the above. Just because someone contacted you here doesn't not mean they are reputable. We have a lot of members who lurk behind the scenes just waiting to pounce on someone asking about puppies.
There are some great threads pinned at the top of the Yorkies For Sale section that will help you find a puppy from a reputable breeder.
Yorkies For Sale or Wanted - YorkieTalk.com Forums - Yorkshire Terrier Community