
As I said before you can have a super example where there is no choice but that one, or plenty of choice and nothing outstanding.
Of my three champion bitches the first was out of a litter (my largest to date) of 9 of which 6 were bitches, and she was my pick (though several were promising), though I sold her (wanted to keep a larger age gap between keepers, and planned to keep one from a second litter) hoping the people would show, they didn't and I had her back (thankfully).
Her sire was from the super litter of only two, one won the group at Crufts and the male was top dog in breed one year.
My second champion bitch came from a litter of 2 males and 2 bitches and the other bitch was obviously not as good as the other three pups so no real choice.
My youngest champion bitch was in a litter that had 4 bitches, but she stood out. In her litter by an overseas stud I got five bitches, yet still managed not to keep the best, the best is being shown but is a bit of a handful for her easy going owner, so hasn't yet fulfilled the promise she shows.
So it really comes down to the quality in the litter, one litters best may not be as good as second or third choice in another, some litters are very even and several are as good as each other and it's a matter or opinion and preference, and other litters there is just nothing really good there no matter how good the pedigree, an experienced breeder one would hope would know if the latter were the case and choose to place all the pups in pet only homes. Though of course a very successful breeder may well consider some pups as pet only that others would happily show and do reasonably well with, they just are aiming much higher.
So choosing your breeder is more important than choosing a pup. A successful breeder will not wish to see you in the ring with something less than good, though sadly there are no guarantees, pups are chosen on promise, which many will not fulfil.