I would not waste much money on component video cables, all the new gear has or will have Digital Video Interface (DVI cable) to pass hi-rez. Just my opinion of course.
I hear there is a Sherpa high up in the himilayas, he has this ability to trap the lifeforce of thier ancestral Long Haired Yaks into thier component video cables. Apparently they are the true holy grail of Component Video Cables, equaled by none.
However, this is a mere rumor, for no Audiophile who has ventured there to meet this mystical sherpa have ever returned.
I am inclined to go with Nordost as well, I had thought, like many that video cables didn't matter, that was until I tried a Nordost Optix S Video cable from my DV-09 to the TV. WOW! The picture was dramatically better. Haven't made the leap the their CVC yet, but will likely soon.
FWIW A DVI cable is a direct digital feed. If you are using an analog display (CRT) you could be better off with component or DVI, depends on the circuitry in the TV/Projector vs the source. DVI is what most computers use to connect to monitors (LCD's), and is interconvertable with HDMI (which is basically DVI with an audo signal as well.
I'm no video expert by any means..my limited video experience is one RP-hdtv in the living room and a cheap Infocus X-1 projector in my dedicated room.
Kennyt pretty much answered your question regarding what a DVI cable is (Digital Video Interface). Almost all of the new gear has this type or will have..even my Comcast hdtv box has this (not active yet I'm told) for future use.
Costly component video cables will sell used for very little in the very near future. Videophiles are somewhat like Audiophiles..they upgrade very often.
Every dvd player that has hit the market (there have been about 4-5) that could up-convert to 780p or 1080i has had legal action served against if this could be done using component cable output. They quickly left the market.
There will be no hi-def picture over component cable and I fail to see a big difference in picture quality between well made component video cables regardless of price at 480i or 480p. Of course IMHO
I am a member of the camp that believes mega-dollar video cables are largely a waste of money unless you have an absolutely top-end video display/monitor that has been professionally calibrated by an ISF technician. Assuming you have an analog set, the primary technical specification that is of concern in the ohm-rating of the cable: it should be a very accurate 75 ohms. I have tried various video component cables with my Sony WEGA monitor, and eventually selected a set made by BetterCables. I have not used their Silver Serpent Reference cables, but currently am using its predecessor and have been VERY pleased with the performance.