As to the long-term storage medium, you may prefer CD-R. While the
medium is the same, when burning choose this instead of Audio CD mode,
except if you will play it on an old player which cannot read CD-R. The
preference is because CD-R has much more redundancy so error correction
strategy is far better. Audio CD repairs erros by interpolation, so
quality may fluctuate. CD-R yields a bit by bit coincidence. In any
case, purchase good quality media.