Sock, sorry if I sound like an ass with this (actually, not really sorry, but anyway...) for someone claiming to 'work in the video industry, so I notice the difference', you seem pretty clueless about the various cable standards as well as the basics of using your console....
In order to use Component on the 'normal' 360 cable, you have to change the switch on the plug to 'HDTV', or away from the plug if you've removed the sticker and it's not embossed into the plastic. If you don't do this, then it'll output at SD, not HD resolutions. Most TVs support 720p just fine over component, and some will even run fine on 1080p using component.
What sets Component and HDMI apart is that component is still an analogue signal while HDMI is digital; to X-Gamer, this isn't a matter of 'the cable makes a difference', it's a matter of the pins and wiring within the actual cable with it comes to DVI-Dual Link. A simple check in the manual for the monitor would have explained exactly that to you, as well as knowing that the pins visible in the connectors would differ...
Neo, you made a very stupid move with your cable purchase unless you got the 5m cable and/or have practical use for the four advantages it has that any general consumer might ever make use of, namely 3D over HDMI at 1080p, ethernet, audio return or the 4k*2k resolution at 24bit+ (hint, chances are you don't as I get the feeling you don't have a monitor with these sorts of capabilities nor an output source of these capabilities if you say that R1.4k makes your wallet hurt), at which point the price is still disgustingly high... But then, your money, your own issue if you're ignorant regarding what you're paying for. :|
Nihilist, with regards to your earlier comment of having 'heard' that higher quality HDMI cables have better sound; this is only valid if you are using a REALLY poor quality cable in a high-electrical-radiation environment. Why? Because the signals being carried by the cable are digital. When you get normal stereo output after connecting it to an LCD monitor or TV, there's a DAC (digital-analogue-converter) within the monitor that's converting the signal to a standard stereo analogue output for you.
Simple wire management and isolation using common household items such as tin-foil can save you hundreds upon hundreds of rands, and needn't look ugly either if you're hiding the cables and/or make use of sleeves that bunch up and cover a few cables for you.
You guys may at this point think I'm being a real asshole with all this, but I generally just get annoyed when people that don't know what they're talking about spread misinformation, which then gets further spread, and then begin singing those things like some sort of gospel.
There is a notable difference in picture *stability* between component and HDMI at 1080p without 3D usage for something like a gaming console on a
normal HDTV (read: not an ultra-expensive one) if there are high amounts of electrical radiation around your cables and output/input jacks. A lot of this will often be in the form of simple grounding issues on the various devices that may make up your home theater setup.
As far as colour reproduction are concerned, there's no difference unless your output is driving 30-bit
colourspace output or higher (note: on computers, when you're running 32-bit, you're actually running 24-bit colour with an 8-bit stiple-alpha channel for transparency). Most older LCD TVs these days still have 8-bit panels, with some more recent ones employing 10-bit and 12-bit panels. They use dithering techniques in their picture engines to reproduce as wide a gamut of colours as possible, generally only getting as high as around 15-bit to 16-bit.
Anyway, to the Op, a 1.3x cable will do everything you need it to unless you have a TV or LCD monitor able to run 1920x1080p 120hz or greater for 3D purposes and actually intend to make use of that. The 1.3x standard cables can still do that, but only at up to 1080i instead. As far as refurbished goes, refurb to me usually means that something may have gone wrong with the product that got fixed, tested, and the unit was being resold; unless there is a tangible benefit to buying it as opposed to say this one, then don't bother.
http://www.sybaritic.co.za/store/product_info.php?products_id=24338
For those of you thinking "then why do these people sell their ultra-special-shielded-insanely-expensive-HDMI-cables?"
Because there are stupid people in the world with too much money that spend before they do any research. Yes, that's those of you that would rather go out and blow R450 on a 2m HDMI cable as opposed to a R100> cable that does exactly the same thing with exactly the same results and often even has extra length on that other cable. If the cable doesn't do what it's supposed to out of the clamshell packaging, take it back to the store and get your money back, simple as that.