I know they're Japanese, and that many of their products are well-regarded. That's what made the question more interesting to me.
Musical Laboratory is ridiculous, and an easy target (though I still like the looks of their stuff).
47 labs contributes real advances, but they are couched in decidedly non musical (or, in my opinion, relevant) housings. Those housings drive the price WAAY up, and I think they're somewhat cheesy. With that in mind, both their debatable successes and their debatable failures, what do you think of them?