MIDI data will be the same , transmitted via a PSR keyboard or an RD2000..
What is different is your ability to control that transmitted data because of the dynamics of the key bed..
Ditto..... BTW tired of Genos already? Modules can open up a new world in music..
Modules indeed give more flexibillity...
Sadly there isn’t much choice... its Ketron or Ketron..
To be able to fully controll the ketrons (on top of the local sounds, and not instead) the keyboard requires atleast 2 fully direct accesible midi channels...
When it comes to an 88 keyboard perfect for combining with the Ketron modules for using both the onboard as well as the ketron sounds.... there aren’t that many choices..
Nord Stage 3 has 2 external channels..
Roland rd2000, has the best keybed(opinion), but no aftertouch...
Yamaha montage has just like Roland 8 channels... but also comes with 10k arps
Korg Kronos has 16 channels and comes with Karma..
Kawai mp7 and mp11 both have up to 4 midi channels...
The new MODX8, might be very interesting, but does not have the high end keybed of the montage..
From the top of my head, all other keys (88) don’t have the flexibillity of easilly combining midi and onboard sounds....