I tried several different video component cables of comparably good quality, and honestly didn't find major differences between them. (I'm using the cable to feed signal from my Pioneer Elite DV-37 to a Sony 36" WEGA XBR direct-view TV.)
I make no claims to being an electrical engineer, but based on my reading about component video cables, I've concluded that the crucial factor for good performance from a component video cable is having a solid, 75-ohm rating. Some of the "better" component video cables on the market do not adhere to the 75-ohm rating, so be careful about this.
I bought the BetterCables.com component video cable, and have been very satisfied with it. It is manufactured to meet the 75-ohm standard, plus or minus 1.5 ohms. I think the picture quality on my video system is excellent (given that it is not high-def), so the cable apparently performs as advertised. I will also comment that the construction quality of the cable is outstanding. You can certainly spend more (you can also spend less), but the BetterCables.com cable is, IMO, an excellent buy. If you are interested in looking at their cable, here is their Web address:
www.bettercables.com
Best regards -- Scott C.