Love my XR too but FaceID is not much of an improvement. You still have to swipe to get to the home screen and it only works if you stare to it in the right angle. TouchID trough the display like some Android phones would be much more effective....
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You missed the $300 price difference and the difference in battery life...
Face ID works fine for me. Already used apple pay on it twice with no issues. However one thing I may miss is 3D Touch which is gone.