Oddly I legitimately don't notice the difference most of the time. 30hz —> 60hz is super noticeable to me, 30hz is painful, but over 60hz… I dont really care most of the timeOnce you go 120Hz you can't go back. I have 2 studio displays at 60Hz and switching back to a ProMotion MacBook Pro is painful. HDR I can live without.
To be clear this is for me personally, I’m sure the difference bugs a lot of folks a lot more