Bose has a very active development division, and they use Neodymium magnets...
Hey, I'm not dissing Neo magnets; I use 'em. But the advantage of Neodymium in most applications isn't strength; in most cases a ferrite magnet can be just as strong if it is designed well. The sonic advantage of Neo is reduced flux modulation under dynamic conditions, and less temporary flux loss as it heats up. Another advantage is smaller size and lighter weight. On the downside is added expense, the possibility of permanent demagnetization if it is severely overheated, and faster heating due to reduced mass. In addition, a good ceramic motor with demodulation rings (also called shorting or Faraday rings) can easily have less flux modulation than a Neo motor - unless the Neo motor also has such features.
So, it's a trade-off. Frankly I think there are other factors that are a lot more important than the magnet material.
On the subject of a small company that employs a top-notch engineer to design their speakers - that's not a bad approach in my opinion. It's much more cost-effective to rent the brains you need only for as long as you need them. A manufacturer really doesn't need a permanent staff of rocket scientists in order to build excellent loudspeakers.
Duke