I recommend that you start a discussion instead of asking such a question specifically about a camera, as it is very likely that someone who owns the A7s does not know the A7 II and/or vice versa... Better is usually relative and you mention a lot of subject areas that you want to cover with a camera and very often it depends on the right lens.

You will find the entry "Start a new discussion" for cameras on the following page: https://www.digitec.ch/de...

There may already be a similar discussion about this, please check it too. Maybe you will find something. Good luck!