Hi Peter,
I did an analysis of about 70 floppies used with my 6000 to determine average file size. It appears that the SD software addresses up to 99 folders each with up to 20 files. On this basis I determined that the 128MB SD card is about optimum for me at the moment. No doubt this may change as I use more of the new capabilities of the 7000.
Cheers
Len C.
P.S. I did try and send this info earlier but it appears to have got lost in cyberspace. If it appears twice this is the reason.