I would say that all the lines have been crossed in the beginning to produce what we have today but the folks that worked with them way back spent a lot of time trying to correct the faults/flaws that they came up with. If your kids are wanting to show I would get the best I can. If you are wanting to mix strains or breeds then the hatchery birds are the way you should go. Just my thoughts.
In your opinion which would you call the best you can get and where do I find them?