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
Hi Iak,
I was looking at the Ocean Elite 3 power cord. what was the deciding factor on choosing the magna? Thanks? I recently purchased the Anti cable PC and I must say, it did make a huge difference in base and sound stage. I am surprised how much of a difference a PC can make.
Hi matt00,I recently added a level 3 Anticables PC, I noticed the same outcome as well.  It only took me a couple years to find a used one at a very reasonable price. 
@matt00, I chose the Mega strictly based upon the suggestions of other Audiogon members that have heard the various AC power cords that Audio Envy make.
@matt00

Another vote for Audio Envy Mega 3. As @lak pointed out, Mega 3 uses twice the conductors than Ocean Elite 3p and recommended for any high current electronics like amps, integrated or power conditioners.