Hi!
As I mention in the video, and I know this sounds hyperbolic, in my opinion Osmose from Expressive E is the biggest leap forward in black-and-white keyboard design since the invention of the piano compared to the harpsichord.
And then Expressive E went even further and partnered up with Lippold Haken and Edmund Eagan to customize almost all their presets and include their fantastic EaganMatrix engine in the synth - one of the most powerful synth engines I've ever seen.
But it's not all pros - sticking to the black-and-white key form factor means a few compromises in dimensional control (though pressure-weighted portamento kind of makes up for that!) and the EaganMatrix is no walk in the park to program.
This video takes you through everything, as well as general tips for interfacing MPE controllers with MPE synths - all these tips will be including in the upcoming book update.
Attached to this post is raw uncompressed audio of over 12 minutes of me playing my favorite presets of this synth.
Osmose feels and plays fantastic - I highly recommend trying one out if you have a chance! Feel free to ask me anything below.
All my best,
Ziv (with synth power comes complexity, not responsibility - but I try to break it down on a channel called "Loopop"...)