You will not get a discrete answer on this matter simply because we all do not agree upon the definition of good sound.
Say, all your components are neutral sounding, and your cords from the same make are fuller sounding. The compounded effect is magnified.
However, giving a mixture of leaner and fuller sounding cords in the same system, you will probably stay neutral or tolerable neutral.
Worst scenario, a mixture of lean and fuller sounding components and cords, your understanding of natural timbre is being tested.
Say, all your components are neutral sounding, and your cords from the same make are fuller sounding. The compounded effect is magnified.
However, giving a mixture of leaner and fuller sounding cords in the same system, you will probably stay neutral or tolerable neutral.
Worst scenario, a mixture of lean and fuller sounding components and cords, your understanding of natural timbre is being tested.