Have to say, after watching some of the videos and seeing that you can shoot 4K ProRes footage, I imagine that takes up space.
I ended up ordering the Mini - though after ordering, I wish I’d gone for the Purple over the Space Grey, but at the end of the day, it’s not a big deal - not like the old days anyhow, where I had to have a black iPhone so I didn’t have, what I considered, to be the hideous white chin and home button! I did get the Cherry cover though, so the hope is that’s a bit of colour to it! Went for the 64GB, because I checked my current usage and that’s 41GB - mostly Audible and Podcasts, so can easily be slimmed down.
Oddly the rear camera flash was the clincher really - when I do inspections, I have to look in dark places, and having a flashlight on the device I’m using helps. The Pro I’ve got often doesn’t get used at the minute, as FaceID is still hit and miss with mask wearing.