I'm so happy with the Audioquest Diamond AES cable that I just went and upgraded my USB cable from the AQ Carbon to the AQ Diamond. Upgrading the USB cable gave similar improvements as with the AES cable - a bigger, clearer, detailed soundstage and a more 'effortless' sound. The bass is also tighter and better controlled.
Devialet 1000 Pro CI - AQ Diamond AES RCA-XLR Link
PC - ifi iDefender+ - FIBBR Alpha Optical USB + "Studer 900" LPS - Singxer SU-6 - AQ Diamond AES
PSB Imagine T3 - AQ William Tell Zero / Tornado / DBS Level-X - PliXir Balanced AC