Best Power cable around/prefer under $300....


I’m looking for the best Power Cable for a Parasound A21 amp.
I would like to stay below $300 because I feel any aftermarket cable would be a huge upgrade compared to stock.I would really like to hear what you all think! 
I am considering the following,

Shunyata Research Venom HC V2 Power Cable. $298
AUDIOQUEST - NRG-4 15A IEC Power Cable. $180
AUDIOQUEST - Monsoon Power Cable $329 
NORDOST - Blue Heaven Power Cable $219
NORDOST - Red Dawn LS Power Cord $384
AUDIENCE FORTE F3 POWERCHORD - POWER CORD $143.
matt00
Cullen Cable sells direct with a trial period, so you can try their 6ft Crossover cable that sells for $199 in your system to see if it works.  Underwood HiFi has their Valiant Silver cable at around $180 that might also be worth exploring.  Audio Envy has been gaining quite a following here so they’re definitely worth a look too.  Best of luck. 
Check into VH Audio and build your own. Buy the best ends/plugs you can afford and spend the rest on the cable. Chris can help you. For an A21 make it a 10 gauge cable, not 12. Don’t make the cable too short either... hopefully 5ft works. I’ve gone to Home Depot and bought bulk cable and threw on Furutech plugs that sounded great. Don’t skimp on the plugs!

I’ve owned the Shunyata’s, Nordost and Kimbers and they were fine, but for the money, especially on a power amp I’d suggest Wywires Silver Juice II HC (High Current) on an amp. You should be able to find these used in your budget or if you reach out to Alex directly he probably has a former show demo he’ll help you with. He was offering a 40% discount so you can probably pick up a new PC as well. Alex is easy to work with and very honest. Good luck.
I bought Pangea SE cables, most used and discounted, and saved hundreds. Knowing they're better than stock cables but not exorbitant just crossed the question off my list. Some people go back and forth and compare PC's but most of my comparisons have not revealed much of a difference once I moved past stock cords. Just my experience.
I'd recommend looking for used Cerious Technologies Graphene line of their Blue, Red, or Yellow power cords, assuming you can find them in your price range.
Although you did not include the following power cord, I also believe the old original Synergistic Research Reference A/C Master Coupler power cord would work very well also.
Another option: Soniquil Power Cable by Raven Audio.
1.5/M $184
2/M $224
3/M $274
Very well built and huge bang for the buck!
https://www.ravenaudio.com/product/power-cables/