From what I've read the 2016 and 2017 series is pretty similar. So for what it's worth I'm using HDR bright and color is at 60(default) and color temp is at 0.
And yeah man, my eyes have been opened for goddamn sure now. I tried Hitman and also Ghost Recon beta, Jesus it looked fucking sweet. I can only imagine how it will look on one X with the 4k patch. I don't know why but until now I had been a bit disappointed about HDR but that's only because I hadn't seen it on my own TV yet and only video a few Gamersyde videos but that's not the same. After being able to directly compare it to SDR it was shocking.
That's odd. I have OLED light at 100 on all modes all the time and the difference is crazy. Not sure what is going on for you.
I would personally say I find the IR really annoying because it just appears way too quickly but it also goes away real soon. I don't regret my B6 purchase though. In no way.