Have taken my Max back today and now have an XS instead.
Much as I loved the big screen, I found it a nuisance to carry about, and in particular the weight was just excessive in my opinion. Just too much of a trade off.
Sitting typing this on my XS I am feeling much happier, it’s definitely the right choice for me personally.
And to answer the question that I previously asked, it was no problem at all to return an online order to a retail store. (I’m in the UK).
I think the X(s) may just be the ultimate form factor. I've never wished that it was bigger, or smaller. Maybe a little less slippery if I have to nitpick.