Make that 4th rate. I've had several Pelican S-video cables in the past for my GameQyuub/N60-fo, AND THEY ALL BROKE (black & white picture).
A year ago I bought a Peliccan GameCube S-Video cable for my friend (cuz i'm a nice friend), only to find out it caused the picture to have 10X the pixelation, making the GBA look superior. Is that what happened to you?
I returned the cursed wires back to gamestop and exchanged it for a Madcatz s-video cable of the same price and much better construction. I greatly recommend Madcatz's GameCube-only S-Video cable (for $10 or less) but NOT the "universal multi-system cable" thingie. If you want to go a step above, Target.com sells the 6-ft Monster Cable GameCube S-video cable for $20.