Which of these power cords ?


I'm looking to upgrade my sound with upgraded power cords. Given I've got a tube preamp, 2 mono block tube amps, Aurender DAC and 2 Martin Logan speakers - we're talking up to 7 power cords so I'd like to keep the total cost for all of them to $1000ish. 

And some suggest going with one brand, to get the biggest benefit.

Brands on short list include:
Suggestions?

cdc2
don't overlook the lower cost Transparent Audio power cords...a big upgrade over most stock cords...
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I've got 2 Wire World Electra 7 pcs that I'm not using right now.If you'd like to try them pm me.Just pay shipping.
For that kind of money I would definitely consider signal cables which is on your list best of luck and enjoy the holidays