What is an excellent power cable?

I have not posted much in the forums in quite a few years, but the Triode Wire Labs power cord I have (the Eight+))sounds very good on my integrated.  Also on a different note, although the Pangea power cord I have always ends up discarded, disconnected, and laying in a corner, it's nice to see elizabeth still posting. 

I guess my budget is around $500

I'd contact Patrick Cullen: http://www.cullencable.com

I just received three of his Gold Series cables (10 AWG).  Patrick's cables are very well made and well within your budget.  I don't think you would be disappointed.

Cullen Cables are fantastic. Over the last six months I've replaced all my cables with Cullen. Very happy with the results.

Cheers,

Scott

Might want to try Rob Fritz’s Audio Art cables. Great construction quality and a nice evenly balanced SQ. 

I've had great results from Clarus Crimson HC power cords for my amps and Kimber PK-14 Palladian for the other components.