I would not say that MD sounds better than any 2 track analog. That, in my opinion, is not true. If your not looking to spend much money, and I'm assuming your not. MD might be the way to go. It will sound good in a compromised environment,i.e., your car and it is flexable. By the way the cost of a disk is lower than a good tape. However, you can buy a CDR for relatively cheap. That might be a better option because, "alright all you MD nuts", cd's sound better and everyone has a player.
MD vs. tape
Realizing that neither of these formats are considered audiophile quality, I'm still interested in a comparison between using a minidisk recorder vs. a cassette tape deck for basic recording purposes. My use would be primarily in the car or for taping FM broadcasts, with an occasional home playback of recorded, borrowed CDs/vinyl. I have no substantial investment in either format, but would be interested in a comparison of buying an MD deck vs. a (probably used) tape deck for these purposes. I assume that both formats will become obsolete within a matter of, say, 5 years. So my expectations are only for a temporary system.