Steve.... Interesting article on cable length...
"0.5m S/PDIF cable is not recommended. If you replaced this with a 1.5m cable, it would probably improve things. See this article that I wrote:" Looks like I will be looking for a 1.5M Coax to replace what I already have

Basically, I am looking for an upgrade to the system I listed, but have to keep it around $500 or less (WAF you know...) and with the Monarchy stuff, that would be around $250 - even better for the WDAF - Wife Dollar Acceptance Factor
Monarchy has had some good things said about it by folks (both classic and upsampler), but I am leery about upsampling and adding things that are not there. I have read some people say the upsampling can add noise to cymbals and high end sound.
I also have seen and read many good things about the Scott Nixon TubeDAC+. But I have been happy with my CI DAC & CI PS and would need to sell it to get the SN. So if I find I do not like the SN, I no longer have my CI DAC!!!
The Modwright mods for the CI are $250 + Ship for the DAC and Power Supply, and as Dave C stated and others, the mod had made an excellent change to the CI DAC. Since I have been happy with my CI setup, maybe the Modwright path is a good one...Wonder what his turnaround time is lately....
Man, this hobby of ours can drive you crazy...so many choices to try to improve the quality of playback...and then to decide based on a budget the best direction to proceed.
Thanks....Dan