What is an excellent power cable?

I tried cables from both signal cable and Pangea and all the cables did not work well in my system (every system is different).  I think a few users mentioned it but for me they sucked the life out.  The stock power cables were better.  For reasonably priced cables, I would look into cables from audiosensibility.com. They use OCC cooper and that seems to make a difference.  I also use Audio Art cables, both the Power1 SE and the statement 2 cables.  Great cables.  Good luck!

I use Harmonic Technologies AC-11's. Lower priced cords with good results in my system.

I went from a Furman power conditioner & Pangea power cables to all Shunyata in my 'reference' system and have never looked back. I will say that the Pangea AC-14XL cable seems to work reasonably well with my source equipment (i.e. Oppo BDP) and I use their AC-9SE Mk II with the sub-woofer on my home theater rig, but I will no longer use their cables for regular amplification. Try a used Cardas power cable or used Shunyata, if you can find one - you can always re-sell them if you don't like them.

Kimber pk10 ascent great cord for the money 

I agree with the Kimber PK10 recommendation.