I watch a lot of television after my wife goes to bed. I do a lot of editing after my wife goes to bed.
So, I am sensitive to changes in volume levels. I don’t want to use headphones and I don’t want to wake her up.
I decided after some research, that if I settled on a peak of -6dB with the occasional transient up to -3dB, I would be able to switch from a professionally mastered DVD to one of my DVDs and not have a big change in levels. And if I changed to most TV stations, the same thing applies.
Not very scientific, but it works for me. Average peaks of -6dB.
Steven
https://www.stevengotz.com