I have been messing around with Vuoksi from Timbre Space, and it is a different kind of beast. It is an additive synth, which means you are not starting from a saw wave and filtering it down. You are building the sound up from 16 harmonics, one at a time, each with its own gain, pan, detune, envelopes, and modulation. Want a metallic clang that slowly turns into a drone? You just shape the harmonics until it gets there.
That hands-on approach is what sold me. Most additive synths feel like math homework. This one feels like stacking bricks. You can push one harmonic out of tune against the rest for that queasy, detuned industrial edge, or pan the harmonics around the stereo field so a pad feels like it is moving around your head. With 64 voices of polyphony you can pile on thick chords without it choking, and the built-in effects and real-time visualization keep you from getting lost in the partials.
It ships with over 80 factory presets, which is a good starting point, but honestly the fun is in tearing a preset apart harmonic by harmonic and rebuilding it into something nastier. The Windows VST3 version just landed on October 11, joining the existing macOS VST3 and AU versions, so it is finally on both sides of the fence now.
Price: $60, with a fully functional 14-day trial if you want to kick the tires first.
Check it out at Timbre Space: https://timbre-space.com