I'd look at www.interlinkhouse.com, at Stealth interconnects and Varidig digital cables. My favorite Stealth interconnect, and I've tried four or five models, is cross-wrapped ribbon, CWR, with the sparkle of silver, and if there's any coloration, I don't hear it. If you're considering Cardas, you might want to compare cross-wrapped copper, CWC, a very similar construction (except no failure to minimize skin effect by using "Golden Ratio" gauges, some of them just plain too big).
Interconnects between DAC and Pre
I have a Theta GenVa and am presently using VanDenHul the First interconnects. The Firsts tend to add some color to the sound but I don't want to lose the resolution, speed et al. The digital connection between Theta transport and DAC is Illuminations D60. Any suggestions?