Some time back I started migrating the system from Siltech New York analogue interconnects to Townshend Isolda DCT 300 cables, having been impressed by the extension and clarity they give as well as their naturalness.  The only 'downside' of them is associated with cable management if, like on my UK system, you have restricted space behind equipment; it is really difficult to avoid kinking them where they interface with components.  Having completed the transition I then spotted an ex-demo pair of Fractal cables for sale on eBay and decided to try them between the pre and power amplifiers.  An expensive mistake!  They are very like the DCT 300 cables, but with simply more to give, especially on vocals.  I have now just finished swapping the DCT 300 cables for F1 Fractals (including 2 x 2.5 m sets linking the DAC from the streamer and phono-stage to the pre-amp).  The only DCT 300 pair left in the system links the analogue output from the Naim NDX2 to the pre-amplifier a connection that is almost never used as it is only there in case I want to play a DSD file - everything else plays through the Teddy Pardo DAC at the moment.

For digital interconnects I use Townshend from DNX2 to DAC and Lector's balanced interconnect from CD transport to DAC.

The German systems are all DCT 300.