You're making a logical fallacy called
hasty generalization: that ALL cables yield no difference because the few you have heard, sub-par, not even OCC, at that, did not make differences. I will put it out there that OFC is different than OCC, quite less pure, and same goes for your Shure silver cables. You see your fail in logic?
Not everything needs to be scientific to yield actual real-world differences. You'd have to be very closed-minded to be strictly all-scientific. If we go by your logic, we can get an orthos headphones, and equalize the frequency range of these headphones to exactly match the LCD2's, and they should technically sound the same.
I have a hard time imagining that one can actually scientifically measure the "realism" and "visceral feeling" that one hears. I'm sorry to break it to you, but FR is not the only thing that matters in audio, and this is exactly why we audiophiles endeavor so much with gear rolling.
At the end of the day, what matters most is not scientific measurements on paper, but what we hear through our own ears. This is what means to be an audiophile, and it's also the reason why we have a separate name for this: engineer. I enjoyed your last few words because you seemed to be caught up in the whole science aspect of the sound. It's good to see that both Objectivists and Subjectivists still enjoy their music in the end.
I must agree with you, that some people here on Head-Fi blow the
improvements cables offer way out of proportion because these improvements are very small. They are improvements, not in the frequency range, but in the little details that we normally do not expect. I am talking about the visceral feeling when you hear the strum of the gear, the realism of the sound (how everything sounds so natural and real sounding that it gives you goosebumps) and things like adding that last needed sparkle to the treble which opens up the sound. You may or may not hear the added texture in the bass, and/or the suddenly smoother mids that sound very seductive instead of just placing them in your ears on a plate.
These are some of the improvements that are offered by high-purity cables because [I believe] that the OCCasting process casts a wire that has fewer breaks in the crystal structure, providing less signal loss. However, I am not preaching this, just stating my opinion, so feel free to believe what you will.
Of course, if you do not have an adequately resolving pair of headphones or IEMs to listen with, your mileage may vary with cables. This may be your case, garrett, along with inadequate cables.
Allow me to end my post with letting you know that on Head-Fi, all opinions are welcome except for opinions on things that one does not have any experience with (e.g. giving opinions and suggestions on gear that he/she does not have or has not tried). However, with issues such as the cable debate, you are expected to give [anti]suggestions in a manner that states your logic but without preaching it like it's the only correct fact in the world, and at the same time preserve etiquette where you do not call others out blatantly saying they are wrong, and telling them to not listen to that person.
Lastly, please do not incite heated arguments on threads in regular forums; there is the Sound Science forum for a reason.
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For you information, I do in fact have a silver cable (Shures) and an OFC cable (Denon D600), so I do have experience, and there is no difference. If it is "quite scientific", please, please show me a scientific study that proves that there is a quantifiable difference between copper/ofc/silver/etc. either by a measurable quality or by a successful differentiation in a blind or double-blind A/B test. Don't have one? Don't worry, I'll wait
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@Angels: Don't take this guys word, do your own research and you'll quickly realize there is an astonishingly little amount of evidence to back up the ridiculous claims of cable enthusiasts. I don't want you to be mislead into spending an insane amount of money on a cable that you will hear no (real) difference from, when you would be much happier spending that money on another set of headphones, an amp/dac, or more music! There is a reason that the James Randi Educational Foundation offered a MILLION DOLLAR prize to ANYONE who could prove beyond a shadow of a doubt that $7000 ANJOU cables sound any better than a Monster cable you can buy at Best Buy, and there is a reason that prize remains unclaimed. Aftermarket cables do serve their purpose though, which is for cosmetic and practical reasons. I personally bought my aftermarket silver SE-315 cable for the same reason you're looking for one, I hated the form fit wire, and the silver looked petty cool
. Those were my reasons, and for that purpose they were worth every penny! (only $45). Know what you're buying and don't get caught up in the latest "audiophile fads", and remember to enjoy the music my friend!
. And for that reason I feel my time on head-fi is better spent reading and learning rather than making enemies lol. Honestly the only reason I even made a profile was to buy/sell/trade, so I'm quite content with lurking. I'll leave the discussion and advice to the more experienced, I'll just sit back, enjoy what I have, and keep learning 
