I also asked some questions about this, overall it seems as though it depends just how deep into your studying you are. If you are starting I personally would switch over. I also noticed the differences and how it had less lessons. When I asked I was told that is because V2 has a more streamlined and unified theoretical framework. Hope this helps!

would it be wrong to say that the subject is just less likely, or does it always have to be that the opposite of the subject is more likely (or equal) For example, for the perfect pitch, one could you say that people with perfect pitch are less likely to take their children to get musical training or does it have to be people with non-perfect pitch are more likely

I WILL SCORE A 170+