Oh, so is that you in my head asking that question ... ?
I've got a Plus I kept and when I use it, it feels big, I'll occasionally compare it to my X, you know, pocket it, etc., and the X is just better. However, that's also comparing radically different designs, so it's a little Apple™ vs. Oranges. Just one other perk on the XS vs. XS Max and it might have been an easy choice, especially something relating to the camera (like when only Plus models had OIS).
To be honest, if I don't go with a Max, I probably won't even upgrade my X, it works fanatically well, I'm not performance limited, FaceID is like 99% accurate for me, it'll run iOS 12, and I'm set with my current storage capacity and carrier.