I purposely put off upgrading my 6 for the X. I even did freelance specifically to pay for it. (wish there was a path to paying for it with PayPal money.)
My primary reason for upgrading to the X versus the 8 is the camera. I don't want the size of the 8+, but even it doesn't have all the new phone features (optical stabilizer in zoom lens, front portrait mode) This is also why I didn't return the X.
My love for the phone is tempered by my growing dissatisfaction with FaceID. I love the form factor, don't notice the notch, love the new gestures, don't miss the home button, love the wireless charging and longer battery life.
In the end, Face ID is an Apple Fail because I have to THINK about how i unlock my phone almost every single time. I have to modify my casual behavior to unlock. If I don't, it will most likely not unlock. After FOUR months, I have not been able to unconsciously bring that sucker around to the front of my face. WHOAH! NOT TOO CLOSE! (guaranteed fail). I am so sick of the NOPE head shake or the need to hit cancel to try again.
I really hope some form of under the screen TouchID is instituted, but I doubt.