I know, but I would maintain that it was still a different dynamic. If you read/listen to interviews with keyboard players who were active in the 70s and 80s, they talk about how the Prophet 5 really changed things, just simply what you can do with keyboards. The polyphony in particular was a huge step forward, it opened doors that had remained firmly closed before that.
I know the DX7 took the synth market by storm and that it is the 80s synth, but it's a different kind of impact, less revolutionary. In my opinion, anyway.
Yeah, I know the model. Or rather, I know the Motifs that preceded it, and I know the idea. I have an S90 myself, which is the non-workstation version of the original Motif-8. I'm personally not a fan of all-in-one synths (I like simpler, more specialized stuff with fewer menus), but I agree, a synth like that is basically all you'll ever need and more.
A friend of mine had an SY-99. Also a great synth, and extremely versatile with its FM component: you could apply it to any waveform in its memory. I suppose the Montage can do that as well.