Your connection with the pup, IMO, is MOST important of all.

I think as long as the breeders litter's parents represent the best of their breed, there's no problem buying a breeders pup.

I would still go look at the breeders pup and put one on hold in case the rescue didn't call back. Sometimes rescues are really busy and can't find time to return calls so you have to harrass them.. lol