T, do you maybe know if transformers in bent NOH are the original S&B, or they are made by john chapman according to S&B specs?

and does it really matter? i noticed that many TVC followers actually rave about the principle and not only about a particular model - would it make sense (for us trying to reach hi-end on a shoe string) to go for something cheaper s/h - such as NOH - instead of MFA that is out of range... are the differences really significant?