Power Cord choices

Thank you everyone for your responses.  The amp I have currently is an Aragon 8008bb mk2.

@sinatra try a used TWL Seven Plus. Good value and good improvement over stock cable. 

The new RSX Benchmark power cord at $250 may be a great option. Roger Skoff, who developed then sold the highly regarded XLO cables company, has somewhat recently started RSX.  My impression is that this time around Roger is trying to give great price/performance for his customers.  

Budget???

If you want to try silver, LAVRiCABLES GRAND 30 CORE SILVER MAINS seem to offer very high price/performance:

https://www.lavricables.com/cables/grand-30-core-silver-mains-eu-us-power-cable/