Like any breeding situation. Look for the best proportioned
Female, with the best colors & fins. I like both genders to have an aggressive attitude.

If I were looking to breed my OB, I would be looking for a awsome female OB. Like most established hybrid species, no one other than the breeders really ever know the recipe used to create the OB. If you were to use another variety female peacock, it's pretty safe to predict that the offspring won't resemble the parents. Here's a pic of my OB.View attachment 1349015
I think picking a female OB is the best choice. As for her coloration & pattern, pick one with physical traits that you would like to see in the offspring.
I find whenever breeding cichlids, it is better to give the male a choice in females, I normally get at least 3 or 4 females and let them choose a mate to pair up with on their own, and remove the others.
What a human chooses may not always be appropriate for the cichlid wants.