I still use a hardware MIDI synth but I'm always on the border for switching over.

I listened to all the demos. A few random reactions:

I LOVE the acoustic bass. By far the best thing here.
The piano is recorded nicely and the demos do not fully explore how it might sound, so it could be even better (or not). No selectable variation.
The muted trumpet is lovely, and this is the first time I've ever said that about a simulated instrument I play.
The tenor sax sounded thin to me. This is also an instrument I play a bit, and have even done transcriptions of saxophone RealTracks for BIAB.
Drums, not enough examples to really know. I do like that they use standard MIDI drum assignments at least.

Excellent value at US $120.

I didn't see, is this a series where they will add on instruments in the future?

Thanks for the notice, and please keep us informed how you like it.

BIAB 2024 Win Audiophile. Software: Studio One 6.5 Pro, Swam horns, Acoustica-7, Notion 6; Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus Studio 192, Presonus Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors