Never used a 106, but a friend had a Juno-6 when I was growing up, and it was a blast to play with.
If you're into this kinda stuff, Arturia makes an absolutely incredible set of physically modelled classic synth engines, including the Jun-6 V, which is a recreation of the Juno-6.
Given that you had an actual one, did you experiment with some kind of feedback loop from the computer through your MIDI interface to the synthesizer and then back to the computer? Seems like that might let you use differential audio synthesis to automate some of the A/B testing.
https://www.arturia.com/products/software-instruments/v-coll...