You have done a lot of research. Good article.
To add ADA is actively developing and adding features. Smart contracts are the most awaited of them.
If we look into github development history, ADA is the most active project, so it has good community support.
And its CEO is very transparent on what is going on makes it a very good project for the long term
RE: Why I'm stacking more ADA: it's not just about the price....