does power cord length matter? fact or myth?

Well, I am one who recommends two meter Powercords.
First, if any cord is an inch too short, it will not work.
Cords last for MANY years, and eventually one is going to swap stuff around. having the luxury of a longer cord just makes it all easier.

When i was younger I had made interconnects 'length to fit'.. yeah, total waste, as through all the permutations, many of the wires becme useless. Lesson learned!!

And for Pangea AC-9, the shorter ones just cannot twist. So a 1.5 meter is minimum, and two much better length.
For other cords, not such a big deal (unless garden hose type)
Also, if one is using a powercord which seems to have an effect, then in this case, a little more is better.(feel free to argue this comment. LOL)

I use power cords up to four meters in length. All Pangea.
(just because they were good, AND cheap when introduced.)

I have recently reconfigured my system and do not need any cord (power, IC, or SC) over 1M long. In fact, I am going to make a 2-foot long PC tonight to go from a dedicated line to my Isoclean conditioner. I never bought into the whole Mapleshade min. 8 ft. min. speaker cable length, or other min. lengths I have seen posted. There are two many examples of short wire runs within the gear itself. Plus, one way to reduce LCR is to use shorter cables.

Absolutely - HUDGE difference.

Cutting it will (at best) provide half the performance O.M.G.

Who would do this - O.M.G.

Short answer - if you'll drink the whole power cord kool-aid, then, no doubt you'll buy into this one.

To put bull aside, it will depend on brand, your equipment, on degree of resolution your system is capable of, current quality and your hearing.
To put it another way, there will be a difference, and you may or may not hear it.
Some manufacturers and audiophiles recommend power cords be no less than 5' long. I remember that someone on this forum said that it is true for Noth American 120/60 current but is the opposite for Euro 220/50 current.
Personally I only have 5' cords and don't think about it.

Shunyata does not recommend power cords shorter than 1 meter. If you do a Yahoo search you will find their brief explanation.