Which cables do you think sound best, out of curiosity? Because if some did sound better, I'd buy a couple in a heartbeat and I'd listen to them AND null test 'em.
as i said, for me, its not so much about best, its more about transparency.
i like to do as little 'mixing' as possible, so i try get everything sounding perfect during tracking.
saying that, i do have some nice 'dark' sounding geetar cables.
the sommer i quoted, that would work great if you are doing a really long run, the fact it has lower capacitance means you won't lose as much high end as you might with the mogami at a very long length.
it really comes down to what you are after.
so many good and different cables for all types of applications.
klotz, canare, belden, gotham, mogami, sommer, piranha... to name a few off the top of my head.
every bit of gear you upgrade gives you that few percent more, and with a few careful and wise decisions, all your little upgrades can add up to 30% of improvement.
you might not notice the 5-7% percent difference just by upgrading your cables, but add that to your new converter, your new monitors and it all starts sounding closer to what you want to hear.
when i did my first install i used the $1 a metre cable because i wanted to spend more money on more important things. no matter how expensive your cable is, it won't help cheap mics sound any better.
when i had more of a budget and wanted to improve things, and learnt more, and did comparisons, i upgraded the cables.
They were the last upgrade, after everything else had reached a certain level.
between a $1 a metre and a $10 a metre cable, you are only going to get maximum around 8% improvement/transparency.
There is no point in spending that much extra if you don't have really good mics, preamps, monitors, amps, guitars, synths, eq's, compressors, etc.
if you have really good gear, then you can justify spending the vast more expense on improving your sound by a very few %.
The trick is to spend your money in the right areas first, then upgrade the other areas when the time and budget is right.
There is no point in having $10 a metre cable if your convertor is just $200,etc,etc.
when your converter costs over $1500 and you have preamps which cost over $1000 ea, then its a good time to start looking at upgrading your cables.
yes, there is a difference between expensive and cheap cables, but its all relative to your gear.
spend your money where it matters first, upgrade to the max level you can afford before starting to upgrade your cables.
your money can be spent in far more important areas.
the difference between a cheap and expensive converter can buy you a 100% improvement in your sound.
you will never get that kind of improvement in upgrading from $1 per/m to $10 per/m cables.
hopefully that helps the OP in your decision.