I got a Sandisk Extreme Plus Pro SDXC UHS-I - 128 GB 150mb/s - works perfect but is likely overkill speed-wise. I had never used an SD card before (floppies and Zip Disks baby!!! - < that’s an abacus, once THE cutting edge calculating tool - only real OG, purist mathematicians still use them today)
I formatted the SD right out of the wrapper on the S2400 to be safe, not sure I needed to but it worked - or didn’t do anything, but still worked. When looking at SDs there’s a lot of nuance in photo/video, but for audio file transfer you really don’t need much. Seemingly can’t go wrong with Sandisk they look to be a solid standard. I believe Brad has tested up to a 2TB card. That should take some time to fill.
P.S. - Are shoe boxes overflowing with filled SD cards a thing?
P.P.S - Any recommendations on most efficient way to transfer floppy and Zip disk files to SD please share.