Frankly, among the group you mention, I wouldn't expect you'd hear a difference worth the expense.
I'd recommend spending your combined power cord budget on a used Shunayata Python for your Hydra 6, and then possibly purchasing several Volex cords.
I'd recommend spending your combined power cord budget on a used Shunayata Python for your Hydra 6, and then possibly purchasing several Volex cords.