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
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I see a Purist Audio Dominus Diamond PC listed here for $4495. You'd have to be crazy ...
Ditto for the Tara Labs Evolution Omega at a mere $5300 - original MSRP of $12K!  
Buy Pangea and stop worrying! To believe that the "grass is greener" over there is to be caught up in a neurotic obsession!