I had PAD Proteus RCA in the past, it was a good cable at the price between my STAHL-TEK Vekian DAC and my NAGRA preamp, but a bit colored and not as detailed / transparent as I want (I was PAD dealer at that time). I still have an interconnect from PAD.
Cables burn in is very important (depending on the design and on the materials used), and sometimes cables can reveal problems in the audio system. I never listen to PRANAWIRE spdif, but only to Cosmos II in XLR, and it's really a great cable. However I sold it to upgrade to Arhat.
My view is all wires and components are "colored." It's just a matter of picking the ones one likes, which is where individual taste and synergy come in.