When you go to visit the breeder, watch the dam with the puppies. She should not be a total spazz and she should not be a drooling, growling menace -- pups should be probably 4-6 weeks old when you see them.
Ask if they will undergo any temperament testing -- not the end of the world but it can help you get a middle of the road type pet.
If you take the puppy home and enroll it in classes within a few weeks, and continue to sign up for classes, puppy, basic, cgc, etc., it does not matter what line of puppy you have, with training and some socialization, your puppy will become a member of your family that you will be proud of.
American lines are beautiful. I was at a obedience/rally trial our club put on over the weekend, and the dogs there were awesome. All of them very approachable, with excellent temperaments.
Pick a breeder who does something with their dogs, trains them for some type of performance or for showing.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC