- there are a couple out there that I like and they range in budget
Anti Cables has some nice looking cables - $180US - I like the braided geometry...http://anticables.com/power-cords#!/Level-1-Classic-Series-Power-Cords/p/14644821/category=3461168
Silver Resolution from Signal Cable - around $250UShttp://signalcable.com/silverresolutionpower.html
For an exceptional power cord try the Power AC 2 from KLE Innovations - around $350US https://kleinnovations.com/kle-innovations-klei-products/klei-ac-power-cable/klei-gpower2-ac/
Then there are the DIY cables that I usehttp://image99.net/blog/files/category-002ahelix-power-cable.html
The Helix is the best geometry for a power cable I have tried to date and can be made fairly cheaply depending on the wire used - the cables in the link will better cables exceeding $1500 and maybe even higher.
For a very affordable high performance DIY cable that is a little easier to consruct...
- take a piece of 12 gauge extension cord from Home Depot
- remove the sheathing and take out the wires
- braid the wires
- Attach the spades (from the link above)
- attach Sonar Quest mains connectors
- Screen is not required - the braid geometry defeats most all noise issues
- a piece of expandable nylon sleeve finishes it of nicely
If you want to improve on the braided design - instead of the Home Depot extension cord buy a piece of Encore bulk power cable from DH Labs and perform the same steps above. For higher current draw components try DH Labs Power Plus bulk cable.
I consider the cables in my system to be on equal footing with my components, so I do not consider it "frivolous" that my cables may equal or even exceed the cost of the components they are attached to.
Hope that helps - Steve