OK, I guess this is dumb question series #1: Is it better to use disks in cartridges or not? I guess they're more durable, and as I understand it, they can be write-protected, but are there any other reasons for using them? In the manual they only show disks in cartridges when clearly referring to a DVD-RAM disk, but local shops seem to have only disks without cartridges in stock, and they're not that widely available around here anyway... The sales assistant I spoke to today didn't seem very aware of disks in cartridges. Finally, is there a big price difference between the two?