knocks, you dont really know what you are talking about.
mp3 is not cheaper, minidisc is. you can buy 80 minute blanks for $2 and less, the sound quality is better than 192kbps mp3, and best of all, all the music you want for less price than a mp3 player. also, minidisc can record anything, so i dont know what you are talking about when you say "more popular (more music)" are you aware that a md can record mp3s too? and cds? and anthing that makes noise?