Like many other people.....the only reason I am upgrading from the iPhone X to the Xs Max is screen size. The only question I have is there some software tweaks like taking a selfie with an AR item in the background reserved for just the XS's?
I could be wrong and probably am but I feel like the potrait mode on XR is limited to 3 and the XS/Max has 5 and the XR has 5x zoom whilst XS/Max has 10x but other than that software wise, I think that's about it.