Jeff Rowland Synergy IIi versus Capri and Corus?

I posted this elsewhere: As compared to the Synergy, the Corus is more transparent, quieter, images more precisely and has deeper cleaner bass.
I really enjoyed the Synergy IIi which was I felt was very musical despite being fairly neutral. In retrospect I think the Synergy emphasized the mid-bass a bit as compared to the Corus which simply goes deeper without undue emphasis anywhere across the frequency range.
One caveat is the long run-in time – 1000+ hours – I was concerned when I initially plugged the Corus in and it sounded a bit “off”. See the helpful JDRG Knowledgebase for “break-in”.
If there is one word the sums up the sound of the Corus to me it is “holographic” – in terms of providing precise 3D images that surprises by revealing the normally hidden music nuances.
BTW, the design of Corus is virtually the same as the Criterion except for the absence of battery power supply.

Optimus - tough question since I don't have any experience with the 201. But I did have a similar dilemma because I was overall very happy with the Synergy IIi - so I was in fact considering an amplifier upgrade. I eventually decided that upgrading the preamp first based on the logic that the 840W amplifiers are very good (and well reviewed to boot), that if there is any short-fall in the quality of an upstream component, then that will limit the overall potential of the whole system. So I followed my gut instinct and upgraded the preamp based on the assumption that the 840W amplifiers were not primary limitation in my system.
I must admit was surprised at the difference the Corus made because I did not perceive that the Synergy IIi to have any significant faults. I was fortunate to have had the opportunity to borrow a BPS battery supply that did lower the noise floor of the Synergy IIi. So that was the one area I expected some improvement. My surprise was the additional detail, deeper bass, improved dynamics and more precise imaging from the Corus.
But do note that I still think the Synergy IIi is a great preamp with a big inviting soundstage. Finally more detail, bass, and dynamics does necessarily not equate to more musicality – I still believe that the Synergy IIi can hold it’s own in that respect.