I’ve been using iPhone 14 Pro Max for a year which my company gave me. But it has disadvantages more than advantages for me. I want to change it with an Android phone that bootloader unlockable. I want to install Google-free ROM.
A little note, I don’t like S23 Ultra in particular because I really don’t like its frame.
Also take a look at the Pixel 8. In my opinion the 300 euro premium for the 8 pro is not worth:
12GB ram instead of 8
A temperature sensor
Telelens
If you realy prefer a bigger phone, go for it. But I think the Pixel 8 is a better deal if you want to go for a custom rom like GrapheneOS, because you mostly pay for extra software features with the pro, that you can't use with a custom rom.