I too splurged lately and bought these $20 speaker cables ($2/foot) with banana plugs built into the ends!
I love them: They allow me to setup my speakers with a nice clean look, and with a color that matches my speakers. It also avoids the tedious process of splicing wires and attaching banana plugs manually (a process I’ve grown very tired of). So for aesthetics and for convenience, I absolutely recommend splurging on some nice $20 speaker cables, if you can justify the cost.
But do they make my speakers sound better, or different at all? No, of course not.
If you think you hear a tonal difference from your expensive speaker cables, I’m sorry but you have simply fallen for a scam. It’s been said a million times, because it’s true: the science on speaker cables is well understood. The only ways speaker cables can possibly change the sound signature can also be achieved for pennies (and is generally going to be inferior to every other kind of proper equalization or filtering) with off-the-shelf analog components and wires. Most expensive speaker cables don’t even add analog filtering components though, and in fact don’t change the sound at all (what you think you hear is placebo).
Anyone is free to disagree with science, in the same way that anyone is free to be gullible or foolish if you really want (you’ve been warned; so if what you’re doing makes you happy, more power to you). But this does not mean spreading lies and myths is okay. You can believe whatever you want, but if you make an extraordinary claim (like “different speaker cables without any different inductance capacitance or resistance, sound different audibly”), you need to be able to prove it.
This topic has been rehashed a billion times over now, so I don’t think the believers will suddenly be convinced by this internet post. But to those who do believe, I ask you to ask yourself this:
Would you bet actual cash money (equal to the value of these expensive speaker cables), that you could tell your audiophile cables apart from coat hanger wire cables, in a double blind test where you have as long as you want to listen to each cable?
Because if you aren’t willing to take this risk, then when would do you literally put the same money down, by buying them?