you should get it. It is easily the best phone out there for headphone use. Only loses the the Pixel for battery life in your list, screen is actually really good, very lightweight (some people don't like this for some reason), phone looks great with a launcher. I also like the 2:1 aspect ratio a lot better than Samsungs.

If I didn't have it, I would get the S8. The Pixel lost me with dropping the HP jack, I will never buy a phone without one. The S8 is great, best screen of your list and Samsung generally keeps up with updates well enough.