TL;DR The sound through either of these headphones is fine, solid noise-cancelling, fairly comfortable, the software has notable issues and my user experience with both has been frustrating; UX a bit worse with the Sony, call quality is bad with the Sony especially for the person on the other end of the call.

Update, seven months later: I’m definitely not happy with either of them, though I enjoy several parts of life much better with good noise-cancelling headphones on. If I had to do it over again, I would choose the Bose for slightly better UX and significantly better phone calls (particularly for the experience of the person on the other end, blocking out unwanted background noise on my end).

I don’t like the new interior of the entrance. Now instead of “bigger on the inside”, it’s “extra-dimensional addition that couldn’t be seen/accessed from the outside”.
… Maybe they’ll explain some brilliant reasoning for all this. Until then, I don’t like it.

Spreadsheet to Compare Pixel 2 XL and Pixel 3 XL and Pixel 4 XL phones by Google. (Added Pixel 4XL October 15, 2019)

128gb storage capacity is perfectly respectable as an option, however as a maximum option for storage capacity it is simply pathetic in 2018. It was woeful in 2017. All the more impressively pathetic in 2019.