I think formulas have come along way, I don't know if I would use them if I didn't have too. But then again thats not something I need to worry about anymore. I see they are making new improvments on it all the time. As far as circumcision, I think that would have to be a personal choice of the parents. All I know is a male family member on my husbands side talks about getting it done when he was an adult and it was a nightmare. he likens it to being "slowly castrated to death".