I'm working on the retina 15" and it is a very impressive machine. Besides the good performance, the retina display also has a great advantage: With a small add-on such as 'Pupil' you can have full control of the screens resolution. When (if) needed I can run AC16 with a screen resolution up to a huge 3840x2400......50% more than my 30" cinema display !
you will need good eyesight to do this...but on a more practical note, it does mean that you can set the same resolution as your external monitor & not have to keep switching between two different work profiles (something I've only just realised myself ! ).
In my case it has been a great investment (especially moving from a 2006 laptop), and I thoroughly recommend it if you have the means.
AC28. Twinmotion.
16" M1 Max MacBook Pro 32GB, Apple Studio Display, MacOS 15 Sequoia