No one has mentioned the difference.
"CD-R Audio" (aka "CD-R Music") are CD-Rs for which a royalty has been made to various music industry organizations (supposedly as compensation for royalties lost due to copying of commercial CDs).
There is no technical difference, except that standalone CD Recorders require that media due to the royalty compensation issue (I assume that Recorders look for a code on the CD-R).
So, if you are using a PC CD-RW, then it is only a question of whether the quality and price of the CD-R Audio disc matches your needs and is competitive with other CD-Rs that are available.
The "standard" for CD-Rs is:
so anything else better be significantly cheaper.