Let kitty choose
As a former breeder, I always found it best if the prospective owner sat on the floor and played with the kittens, usually there is one or maybe two that will consistently want to go to the person, play with the person and sit in their lap. It's best if you take your time and spent a minimum of an hour, playing, observing and talking with the breeder. IMHO, I always think you get the best connection when the kitten chooses the owner. In my experience, sometimes I was not able to pick up a new breeder personally and only saw it in pictures or a video, but it was a bloodline that I wanted to incorporate into my breeding program. I noticed that I never did have that same "soul" connection with a cat or kitten that did not choose me.
"We humans are indeed fortunate if we happen to be chosen to be owned by a cat." -- Anonymous