Cd-rw

Sound should be the same, some drives might have a harder time reading a cdrw but most modern ones should do it. Should get 1000 write cycles but scratches could shorten the life, write speeds will probably be a bit slower, can get 80 minute discs.

I've only used a couple cdrw discs since my first 1x burner, still working on a stack of couple hundred cdrs that were free after rebate a year or two ago.