Cardas vs Shunyata power cords question

Anyone compared these? On my system Cardas Golden Cross cord that I took for an audition sounds way too coloured, kinda dark and artificialy warm - I would prefer something more detailed and natural. How does Shunyata compare? I keep hearing about them all the time.
My system is now Sony XA9000ES, Mcintosh MHT100 as pre for the fronts, McIntosh MC275 power amp and Sonus Faber Grand Pianos. I need cords with an open, detailed dynamic sound.