Power Cord up to $100?

Pangea AC-9. Even the wife said, "Holy crap, I can hear the difference!"

I'm surprised My Audio Cables (MAC) or Cullen Cable haven't made your list yet. Both make very nice cables that won't break your wallet.

Also what monoblock amplifiers do you have? To Schipo's point what do you feel is lacking from your stock cords?

Signal Cable.

Just wonderin, why did you pick $100 as your price point?

Opera Audio-Ella Baby. Quest For Sound discounts these so $100 a pc is possible. The sound is big/bold and dynamic. NOT as refined/relaxed as my Acoustic Revive-Reference($1250 retail) or as detailed/resolving as my Audio Magic-Liquid Air($400 retail) but are more dynamic then the AR or AM! Since your not using these on front end components their shortcomings are less of an issue. FWIW I have found mixing different power cords can achieve better results then using only 1 brand.