Thanks, you're probably right in not really noticing it.
It's just when Apple said the LPDDR5 RAM in the M2 is 50% faster than on the M1 at 100GB/s, it got me thinking about the impact of the 2021 iPad Pro SSD benchmarks just being ~3000MB/s read and ~2400MB/s write, meaning that it may take moment to pull in an intensive app and its data back off the flash and into memory. But I suppose that situation is rare, and in any event would probably be optimised to load in enough first to be responsive, then everything else behind the scenes.
I guess it comes down to the conclusions of the 8GB vs 16GB threads last year regarding the M1, and just to get the size SSD needed rather than buy the 1TB just to get the 16GB RAM. The difference this year though is that Stage Manager could make the difference more noticeable. Who knows. Hence my asking.
Needing 512GB I'm tempted to just go for the 1TB in the hope that there is a bit of a performance boost, and of course less write outs to the SSD means less wear, as does having more free space, (although with modern SSDs, wear is more academic than being a real problem). But with how Apple cleverly price things, it's more than just $100 jump to do so.