I prefer TouchID over FaceID, so that's why i choose the 8+ over the X when i had the choice.
I have compared my 8Plus with the 11, and although the colors on the 11 are warmer and brighter, it is a little less sharp compared to the 8 Plus (due to lower resolution screen). Now I know, most of you don't care about that, but using the 11 next to my 8 Plus it started to annoy me a bit. So yeah, it is noticeable.