All I can say is, for classic analog monophonic/paraphonic synthesis, the Dominion 1 was the clear winner for me over the Sub/Subsequent 37. Three independent oscillators and 3 LFOs had a lot to do with it, plus a solid old school tone that was as good as the distinctive Moog tone. I'm probably not as particular as most synthesists. As long as an instrument has strong fundamentals, I'm happy with it. I don't need an infinity of features, but only a generous supply of standard ones. In that regard, I think the Dominion 1 is the better instrument.
I must confess that I've always thought the Sub/Subsequent 37 design was incredibly ugly. Its Quasimodo profile is so disfigured that I cringe at the sight of it. I also prefer the deeper roomier lay-out of the Dominion 1 type of control panel, whereas the Subsequent 37 seems overly tight and crowded. Plus, I like sliders, which offer instant visual information. Therefore, my second pick after the MFB would be the ARP Odyssey. Many years ago, I owned successively each of the three Odyssey models, and I actually liked its sound and features more than the Minimoog, which I also owned. But none of this is to imply that the Subsequent 37 is a mediocre instrument. All three of these synthesizers are superb. How blessed we are to be struggling to choose between them!
As was said on the other thread, the issue of repairs is a serious one. If you live in the USA and your instrument needs to be repaired in England - what, then? How long before you've spend a ridiculous amount of money playing this foreseeable game? That's the primary reason I've avoided vintage instruments, even though I'd love to use them.
A long time ago, I had an Octave CAT SRM. It was a fabulous synthesizer, but it spent many weeks leaning on its side at the repair shop. I wasted much of my meager lawn-cutting income at the time just trying to keep it going. It's a lesson I haven't forgotten. So, the long-term practical side of owning a particular instrument should also be considered in making your decision.