okay, the facts.
cd/mp3
pros:
a cdr can hold a lot of mp3's
cdr's are cheap.
high end unit not as expensive than high end md unit.
fast cd burning
cons:
mp3 sound quality is more lossy compared to md atrac encoded songs.
cd burner dependent (ripping mp3's).
large and bulky compared to md's (you need a bag if you want to go out).
no unit so far has better sound output quality compared to md units (but these are unperceptable if you don't use good earphones).
discs are sensitive and susceptible to scrathes.
quite combersome when changing discs (can't be done with one hand or when running)
can't transfer songs from your cassette collections or your vinyl turntable.
minidisc
pros:
minidisc blanks are also cheap, very stylish, small and portable. (great if you're a minimalist)
you can get a cheaper md unit for $150 bucks more or less
unit is sooo small you can jog or do active activity with it in your pocket.
if you want to record you 5 year old daughter's songs or your guitar playing, you can do it with far better sound quality compared to cassette recording. (digital)
sound quality (the same or better than cd quality in sp recordings).
you can step on your minidisc blank and you can still play it without any difference
can record from any audio source whether it be digital or analog. you can even record your phone conversations
.
you can record and rerecord on your blanks for hundreds (or millions as sony claims) of times without any sound degredation on the blank. (you can only do this with a cd-rw which costs a bit more than a regular cdr)
etc.
cons:
lesser songs in a single blank compared to a single cdr
expensive units if you want the best ones
netmd ripping is not as fast as burning a cd
*can't think of anything else