I was listening to this guy last night...
View: https://youtu.be/fpixth9CW8o
He tries hard to use that analog controller to do scoops in a natural sounding way. Mostly he fails, and they end up sounding too synthy, but a couple of times he does better. This suggests that there's a skill to it that could be dialed in. I used to own an Aerophone AE-5, and I found that setting the bite sensor to about a third of a tone (35%) gave me the best results. The YDS-150 should allow it to be set to as little as a quarter tone, as someone has already suggested in this thread.
Speaking of the AE-5, the instrument sounds on that were
much worse than the YDS-150. That's why I finally sold it. I just didn't much care for the whole Frankenstein situation of needing to connect to a DAW with additional sounds to get decent output. I ended up buying the SWAM sax suite, which set me back some money, then not really using it.
But the SWAM sax voices show what's possible, which makes it even more frustrating to settle for junk sounds.
For what it's worth, having now listened to dozens of different YouTube efforts with the YDS-150, my reaction to the sounds isn't as harsh as yours, randulo. Except for the soprano, which does sound pretty bad to me. The soft tenor has a pleasing sound, and would be even better if you could get rid of that vibrato, or at least delay its onset. Is that adjustable through the app?
I also agree that the flute sound isn't bad.
As a sax player, I'm put off by the use of a real but non-functional mouthpiece and reed. This is useless for embouchure training, so what's the point? They might as well put one of these on it:
That's the alternative "recorder" mouthpiece for the Roland Aerophone mini, which also has no bite sensor. In fact, it would probably make sense to add a tip like that to the 3D printed bent necks you guys have been discussing in this thread, and be done with the whole mouthpiece and reed canard.
As you can tell, I'm interested in this instrument. I play sax, flute, recorders, ocarina, etc. in church, and also at open mics. I'm not formally trained on sax, but I've played most of my life and I'm comfortable with it. My flute playing is erratic and generally weak. But often a flute or some other "classical" C instrument is needed for the church stuff. And occasionally alto or bari parts are useful. I don't even own an alto or bari sax anymore; just the tenor. So the YDS-150 could potentially be very handy.
When I had the Aerophone AE-05, I tried sending the sound via aux cable to a portable 25W Aomais speaker, and the result was perfectly fine for church use. About the same volume as the acoustic sax without amplification. It's also fine for music circle jams, etc. So that would also work with the YDS-150, and if I ever need something with more power, I can get it.
But I'm still on the fence. Some of the negatives are pretty negative, and the price is non-trivial for me.