After quite a while of wanting an MD player, I bought my MZ-NE410 at the local electronics superstore yesterday. I'll start with the bad. The included software is almost totally useless. I have never encountered such a buggy program past its alpha stage. It crashed four times trying to catalouge my media. After I got about 20 MP3s in my list, it alerted me to the fact that all but 6 were unsupported, and couldn't be converted!. That was enough, so I went online, and downloaded Real One player. It works like a charm. I've been using Musicmatch to make playlists, then importing em in Real One.
As for the good, this player is tiny, light, and has a cool matte black finish much like that on a B-2 or F-117. The amazing sound quality lets me hear things I never heard when listening to music through my computer, and I have a high quality home theater system connected to my comp. The player seems to excel with classical and soundtrack background scores, but everything else sounds incredible too. One unusual thing is that the included headphones actually sound great too. The display is tiny, but easy to read. It does only show track name at the beginning of a song, but you can switch to a mode that always shows the title quickly, with only a few clicks, so you can just switch back and forth if you really want to.
In closing, if you're in the market for an MD player, go with this unit, just make sure to download RealOne. I'm sure the newest high end models are great too, but they cost twice as much, and still have the same enraging SonicStage software.