Thank you - it will mainly be office work (Ms Office, Safari, etc) but at the weekends I plan to use it for Lightroom and need the power there. I don't care how loud it gets when I edit photos, but I want it to be as quiet as possible when I use it write stuff. I wonder which machine would suit that purpose better - the bigger or the smaller pro.
If the non-pro was much more quiet under office work, I would even take that, though I would atcually like to have a pro for Lightroom.
I use Lightroom a lot on my M2 Pro Mini; I expect you'll be fine with this. I had the 2018 i7 (6-core) and this is much quieter. Though not as fast as I thought it would be, except for the AI for detecting people, sky, objects etc.