I am just curious about who is using what. Don't worry, I am not constructing a Zone Wacko hit list. I am curious because it appears that more people on this forum use BTZS or at minimum they are the most vocal. I understand that there are levels of investment in these approaches, but give it your best shot.
Do you use the Zone System, Beyond the Zone System BTZS, no formal system, or something like the old YOB?
I use the Zone System at varying levels of complexity, right now pretty bare bones. It works for me and has for 30 years.