Its longevity beats any other storage medium available--manufactures claim 75 years for green dye and 100 years for gold dye once the disc has been written. Compare this with an very liberal shelf life estimate of 10 to 20 years for DATs, this is extremely good.
Also, compatibility of CDRs are hard to beat. be With the mass availability of audio CD players, you can take your audio CDR and play it on any available consumer CD player, including many low-end "ghetto-blasters".
However, audio CDRs are not without its pitfalls--primarily the daunting technical difficulties that a user must face before being able to create an audio CDR comparable to a premanufactured audio CD.