Well, I've just got my hands on a CD32 and started burning some discs and haven't got a single one to work yet.
I have 3 different CD-Rs; donkey's years old Phillips 700MB and Maxell 800MB with pale shiny blue read sides and more modern Verbatim Lightscribe discs which I use for my Sega Saturn/Dreamcast and have darker blue read sides. No luck with any of those.
I seen some 700MB Maxell's in a local shop, gonna give them a go next. Failing that maybe try some cheaper Verbatim's.
Does anyone have a link to a specific product on Amazon/eBay/(insert_other_retailer_name_here) that they know definitely works? Can't wait to get something spinning right!