CD-RW, CD-RW for digital audio??? What to use??

[joncinmn]

I've made some good VCD's with a Sony CD-RW650 disk that my Sony s-530D DVD player will play.
I tried Memorex CD-RW(700MB), put it wouldn't play in my DVD player.
Now I've got Memorex 'Music CD-RW (for Digital Audio)', and that does play in my DVD player???

Anyone know what standard blank disk I should look for? I need RW disks, or my standalone Sony DVD player won't play it.

Thanks, Jon