I did it.
Smaller size but still showing the same amount of info on screen.
Way way better battery life - this was a big one for me.
Better cell reception - wasn’t a reason to change but I noticed I’m getting better reception with my XR than I did with my Max.
Things I miss...
Dual cameras. Every time I take a pic I look for the 2x button (owned a X).
The Max is better if you watch a lot of video on your phone. The screens are close but blacks are def more pronounced on the OLED screens.
I travel a lot so size, portability and battery life were big factors .
So far I’m super happy with the change.
I’ve heard a few here over the months say they’ve gone to the XR from the Max. Personally I don’t think the Max is better ‘enough’ to warrant the price difference but everybody has different views on what they hold value in on a smartphone.
I'm assuming the OP is asking from the position of owning a Max and not simply a comparison of the two phones.
If I had a Max and were outside the return window, I would probably keep it instead of selling it and buying a new XR. I have had a XR for over a month and like it a lot, but the primary reason I bought it was its value. I didn't see the XS and Max worth the premium difference over the XR.
However, selling a Max would eat into that difference, so for me I'm not sure it be worth the process. Now--if the size is too big or the owner is sensitive to PWM or has a buyer and won't lose much in the sale, then switching is another matter.
Single-lens iPhones including the XR use pinch-zoom to frame shots. This requires the use of two hands and is a deal breaker for me. The dual-lens camera can be operated one-handed but I found my 7+ a little too big and the Max the same. My hands are larger than most but only one of them works anymore.
Why Apple doesn't make one-handed framing available in the single-lens iPhones is a mystery to me. I could have been happy with an SE were it not for that.
I waited till the release of the XR before trying all three new iPhones and bought the XS.
For all of the armchair speculation about battery life, I find that I charge my XS about every 6–7 days as opposed to my 7+ that I charged about once a week. I'm really good with that. OK, I don't use mine as much as most people—I get that.