And, as a self-proclaimed gear accumulator, let me say it’s my 2nd fav synth (The OB6 being #1).
The sound is so “pure” and the oscillators are just perfect. Throw in their amazing filters and it just makes everything work so well together. I was worried about buying one because they NEVER come up used and their controls seem more limited. In actual use, because you have control over each voice (closest synth I can think of is the Oberheim Two-voice [TVS]) you can sculpt the sound like no other. Modulation is limited though, no question. In practice, this becomes a non-issue imo.
This was the first synth that ever sounded miles apart from other synths I have (NB: The OB-6 was like the same sensation I have from the Perfourmer compared to other synths except that was compared to the Perfourmer!).
I run it 70% in duo mode (a la duo mode like the sub-37, odyssey), 29.5% in poly mode, and, unlike most people here, 0.5% in mono mode. (Note: there are two versions of each mode).
My biggest gripe: really basic MIDI implementation. I wish all those knobs could send/receive cc’s. While you can control one main filter, it’s not as nice as you’d think so I always record it live.