Cees,
Interesting that you thought how small the SD is. My friends with the 7000 have had the same conversation. So much work in such a tiny little package (biscuit).
Attended a workshop by a Technics Rep and he had his SD card on a chain around his neck. Loss was also his concern.

One card for playing and a CD or another SD for backup is a must for me.

(I don't trust computer hard drives....lost to many)
Fran in Florida