Nice system! We have similar tastes in equipment. I also have the Reimyo with Duos and a Berning Siegfried amp. I agree the Reimyo is something special. I was surprised at how much better it was than the Audio Note II/Levinson 36S DAC it replaced. I think the IC you have now is very good and unless there is something specific with the sound that you dislike, I would not change it. A change to a different IC would be just that; a change and not necessarily an improvement. I'm not very familiar with the Demarzio cords. You might want to consider a warmer cord such as Cardas,Purist,Transparent,Audience.