IMO, recordable optical media is not ideal for long term storage of data or music. Too many factors can degrade the information stored on the disk. FLAC (or some lossless format) on traditional HDD's is the way to go. Use CD's for your car or home deck as needed, but don't expect them to last forever. I have old Mitsui Golds, Kodak, Ricoh media that are doing ok, but I have not scanned them in sometime to see. Today's CD media just plain sucks.