Indeed, super helpful info, thanks
@the_accidental.
I'm going down a memory card rabbit hole, why has no one made this more straight forward!
So there's Sony Tough 'G', which are the Rolls Royce of CF Express cards, but there's also high capacity Sony Tough 'M' cards which aren't as high performance (though unclear much). They're also significantly cheaper - I can pick up the 960gb for £400.
Then there's Pergear Standard and Pergear Prime, with Prime presumably better performing, but again I'm a bit lost on the stats, and then how either perform versus the Tough cards. There's also a few comments around about the cards overheating.
There's a great article
here on different experiences but unfortunately hasn't done the Sony Tough M tests. I'm not fussed on video, but it's hard to tell if I need to care for the 30fps. albeit compressed.
Why are these things never easy?