Power Cord brands mixing. "Your Opinions"

i should add that at present, my stereo system is represented by four manufacturers:

power cords by mojo audio, fusion audio, soundstring audio and ear to ear.

interconnects are represented by the aforementioned , but i am using ear to ear speaker cable.

Mrtennis, as you say, "... you could call me an alchemist without a method." Fair enough. :)

Mrtennis, could you please list your entire system?
" If it sounds good it is good ". That may be but it doesn't mean that it can't be improved. We are not only talking about big difference but also about fine-tuning, if I got it right.
In any case, stable and clean current from the wall or battery is far more important than all the power cords in the world. When the current is really bad, my stereo sounds like a good very expensive boombox, and when it is good - well, it sounds very good.

here is my stereo system:

speakers: quaf esl and magnepan 1.6

digital: audionote cd2, pw audio pwt and pwd, eastern electric minimax dac

preamp: bent tvc

amplifier; VTL deluxw 120

turntable: sota sapphire, with audioquest arm and grado (least expensive ) cartridge

cables: mojo audio, sound string, ear to ear, fusion audio

accessories, ps audio power plant, noise harvesters, room tunes, sound fusion sound boosters, juice bar, bpt power strip, alan maher passive line filters, and egg crate mattressses suitably placed.

i will admit that my room is , perhaps over damped, creating a soft presentation. naturally, the sound changes with the digital source. when i use the ps audio front end, there is more extension and resolution. when i use the audionote there is some attenuation in the treble and bass.

Your system may not have enough resolution to hear subtle differences so the results of your experiments with power cords, all same brand or mixture would probably be inconclusive. I may be wrong but that's how it seems.