Seeing the same technique done in different ways by people you respect, how do you resolve the differences? How do you explain it to yourself, not from historical point of view, but from "which way should I do it" point of view. I guess my question boils down to "how do you choose what to teach your students"?
Is this not the case with most waza? Nevertheless, since I have been training for nearly 40 years, I supposed I have evolved a preferred way of training that fits me. As for teaching, I have had so many teachers that I tend to show different ways of doing the same waza--and then let people, especially yudansha, work it out for themselves.