Best power cord for McIntosh MC 501 monoblocks

My room size is a small 17 X 13 associated equipment
Esoteric P70 D70 Powercords Nordost Valhallas
Pre amp Cary SLP-05 powercord Kimber Palladian
McIntosh 501 powercords Acoustic Zen Gargantuan II
Speakers Von Schweikert VR5SE
MIT Oracle Speaker cables
Valhalla digitals
Mit Oracle MA interconnects
Stealth Indra interconnects

Not saying my system is bloated or boomy, I'm looking for the best PC for these amps trying to sweeten the sound a bit. I'm always searching for the ultimate match. I have considering changing one of the Valhallas to maybe a Stealth Dream or Elrod Statement. looking for advice from someone out there with expereince in powercords. Thanks

Dev Thanks for your input

I will look into purchasing the Dreams as soon as I check my bank account. There's quite a bit of money involved with your suggestions. I believe this will be my absolute last purchase for cables. I have went through quite a few in the past couple of years.Living in Wichita KS has to be the worst location for highend audio. It's difficult trying to find that almost perfect synergistic match without not being able to audition.

I do like the Kimber PK10 Palladian though. The Nordost digitals produce a tinnier or edgy sound. When able I will go to the Stealth Sextet as you and another audiophile I've been in discussion with have recommended.

Will also give some thought towards the Nordost Valhalla Power Cord. It's not a bad cord, I just don't know if using two in my digital chain is wise.