I had an older Taylor 2-chamber soft-serve machine…
We sold a decent amount of soft serve…
Ours was air-cooled, so a bit loud, but easier than water-cooled…
Cleaning is a mild chore, but no big deal…
Have you considered making a smoothie variation?
Frozen IQF fruit (think small freezer & 4 varieties)…Several fruit juice flavors…add some ice, blend…