Personally, I love minidisc and have used it for year's but I have to admit - MP3 has overtaken it, and unless you have a big MD collection, it's not really worth starting with it nowadays....

What unit is it? A headunit or a changer? Pics? Specs? Part/model number?

I still prefer MD in the car to CD - no skipping, more durable (no scratching) and easier to store (smaller/less space than CD's) but the limitations of them far outweigh the limitations of MP3's and computers. I am reluctant to ditch MD altogether, so I might just have to get an MP3 player to play though the MD headunit....