I know that from these dogs that I have bred . . . every one I ever sold or gave or traded away made a good to great dog except one that I know of. That was a young female pup and she was re-sold at nine months old and her second owner says she made an excellent dog and he's now bred two litters out of her. That is a 100% success rate. As for the ones I keep for myself from those same litters . . . seems like I get about one in ten that pleases me. Either I'm a lousy hand with dogs or I'm lousy at picking pups or some folks are more easy to please.
That pretty much sums up the truth of this whole thread right there. Thank you Barlow.