There are no bad nips, only nips I have not had the pleasure of sucking on.
Angel Therapist has some nice ones, I really did not spend enough time with Z's nips.
I remember a young little MILF back when I first learned to dive. She bent over in her swimsuit as she was setting up her gear, and those eraser nips were visible. Guess I have been a nip man ever since. I actually am more interested in nipples than breast. Surprised I don't have a stronger lactation fetish.