I had a brief experience (a few weeks) with a Moog Sirin, a Prophet 12 Module and a Digitone all together. Not entirely like your setup, but not worlds apart.
If I’d pick just one of those for sounds, workflow and just the looks of it, it’d be the Prophet 12. What a lovely instrument.
However, as I noticed over time (well, weeks, at least), the Digitone is so capable, there was just a whole lot of overlapping going on. It does great bass and can sound pretty close to anything that punches like a Moog, and the do lots of things the Moog can’t. As far as creamy analogue goes, sure, not much touches the Prophet 6, but anything else in that realm, I felt the Digitone can do and get away with it, especially when it goes into the mix.
The Digitone is the most versatile synth I’ve owned, because as much as it can sound classic and deep and add the body to it that mostly only real hard-core analogues have, it also takes you to strange and weird places which the Moogs and Prophets don’t even dream of.
I know shit about FM, I’m like the FM fool in the corner with that big cone on my head. But the presets in the Digitone just released with the Keys, are so great that for once, I’m happy to just stick with those and tweak them after the best (worst) of my abilities.
With a Digitone and an Octatrack, there’s just no place you can’t go.