Glx - You might consider Virtual Dynamics Nite power cables. They retail for $1500 but you can find them for $600 used. Very, very impressive - particularly on digital and preamp. Enjoy!
Very impressive system. I would second going to the Audio Note M5 or M6, replacing the digital front end with with the Audio Aero Capitole or Audio Note. I would replace the cables. There are lots of options (Nordost Vahalla, Virtual Dynamics Nite, Audio Note, HMS, ..) but I would wait until you address the preamp and digital components. The Transparent cables are musical but really not very open sounding or dynamic. I would recommend getting a professional analysis of your room accoustics and treatment options. Finally, I would suggest you investigate resonance control for all your equipment. Also, checkout Herbie's Audio Lab CD Mat and Stillpoints ERS Sheets for EMI/RFI reduction. What are you using for power cords, power conditioning, and circuits? It is overwhelming all the considerations and options but they must be addressed to maximize the potential of your system.