Hi Bud and Mike,
I would rather have a CD writer/player than the SD card since a CD can store 650+ Mb as opposed to an SD card's max storage capacity of 256 Mb currently. However, the CD device would have to be a writer/RE-WRITER so one could keep adding new styles, compositions, or whatever until the CD is full. The SD card is the next best option if a RE-WRITER is not included. I agree with Bud. It would be nice to have all three options - CD, SD card, and floppy disk.
Chuck