This was interesting, a sort of focus group specifically set up to see if folks noticed the difference between older displays and the new iPhone 13 adaptive refresh ProMotion display.

I love the new display, but not sure I would have noticed the difference when 120Hz came into play. That said, it definitely makes for an overall better experience. Not something that would impact my purchase decision like, say, the 3x optical zoom or macro capability in the camera, something very easy to notice.