Who else is using old cables/interconnects, and is happy?

I have kept original Purist Colossus fluid speaker cables for 20 years, along with the same speakers. Feel no need to replace them until I upgrade the speakers. I have changed all the rest cables and cords with excellent results.

Started building an entirely new system (components + speakers) a couple years ago and only brought all power cords from the prior system. I needed a balanced IC and AES interconnect for the new system and went with Nordost Heimdall 2.

The power cords I was using from my prior system were all PS Audio P3 or P5s with the exception of a bottom of the line Shunyata PC on the Hydra 6 power conditioner. Upgraded all PCs and achieved nice results. Most recently I replaced two of the newer PCs with Audio Envy PCs, one is a P2 and the other is an M3 model. They are significantly better than the Isotek Optimum cables they replaced. Very good value proposition here.

In my case, the PS Audio power cords were not that good, so it was easy to improve on them. The fact that the AE power cords were an even larger step up over the newer cords demonstrates their value in my system. I will be buying more AE cables once I've settled a few things in my system.

I use Shunyata Copperhead and Diamondback power cords that were 15 years old when I bought them used here.  I have no idea how old they actually are.  As far as I am concerned, they are good enough and will not be changed.  

Mine are all old. 10 years +. Wire technology has changed greatly though in recent years mainly new ones from name brands cost more than ever and no end in sight.

Once I find the right ones, I am done. My favorites are from DNM Reson and Mogami.

Pangea works well and sounds good if you can get the connector to stay in place. Have not totally settled on power cables yet though.  Leaning towards Signal Cable there.

Some of my power cables are getting old, Synergistic Research Master Power Coupling, and interconnects also. Speaker cables are around 10 years old, two sets of Tempo Electric 12 gauge solid silver in Teflon (one for each amp).

I've made many of the interconnects I currently use, and they sound as good as any other cables I've used. I let the guys that can afford to really sweat the small stuff worry about how to best spend large amounts of money on cables. I'm happy, and I hope they are, too.