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
Make your own ,
you can buy Furutech cable, iec and power plugs or
Cardas cable ( if you have a Hotpot ) with their iec and power plug .
Cardas has 9.5 guage cable for your amps and 11.5 for the rest of your power needs .


also agree ggc. Very many good options available, and you don't have to replace all 7 at once. You can try some cords essentially for free, so give it a listen...
Seriously? Another power cord question? Unless your current power cords are either damaged or undersized for the current load, paying for fancy power cords is a TOTAL WASTE OF MONEY! Geez, I can't believe this is still a topic. 
Making cables is pretty fun.  I had an older Kimber PK14 and a PK 10 Gold which I got the itch to "upgrade" and so I purchased some Furutech plugs and reterminated them.  Did it improve the sound?  I don't know but it sure was fun to do and they look much better than the Wattgate connectors.  So if you have the inclination, maybe make your own.