MD's rock!
They're great value for money, Sony sound quality is spot on, you can record and do what the f&ck you want with them and I like the fact that I can still have a collection of disks with which to fumble about with whilst I'm driving my car!!! ;)
When you fill up a disk (1GB takes abit of doiing with atrac3) you can then use another, rather than have to start deleting sh&t like you do with MP3 players.