I think the egg thing has been really beaten up since my 1st year as a Food Chemist in late 1964. I have seen the pendulum swing from good for you to bad for you, probably a dozen times. Behind every change was a research paper and someone was making money.
So if you are worried about Choline in Eggs--->then start worrying about Choline in the following:
*Lima Beans
*Soybeans
*Chickpeas
*Herring
*Mung Beans
*Salmon
*Tuna
*Organ Meat.
You know they are making foods from Algae, and other Plant substances to replace our Burgers, and Chicken Patties. I remember when surimi was the hot replacement. My lab made Surimi Hot Dogs--we showed them at a Technology Show in 1985--and the word got around that we were providing the best tasting hot dogs for free. Little did they know they ate fish! We gave out thousands!
Nalakrats
Eggs high in Leucine (bad) and growth factors. Recently linked to Breast Canceras well. IMO stay away (once a month).
Doug