how many ppl now use those mini cdrs? almost none. And the square/rectangle ones, if not PERFECT, will not spin right in the cdrom. Already tried it, got jammed in my cdrom.
The 3" cd's are cool, but expensive and not practical to use.
Tho, one downfall i see now is pioneer doesn't have a drive that is slot scsi and cheap like before

AND is compatible w/ the cloneCD features.