AZ Satori vrs. KKable's 12TC vrs Cardas Quad 5c

OK, here is another one of those stinking cable compare threads but I am about to pull the trigger on one of these three and can't decide. Unfortunately I need a fairly long run to reach my speakers (15' pair) so this is causing the price to extend into my upper limits. They all cost pretty much the same for the length I need so its now down to the best match for my system.

I am pretty happy with the current sound of my system and my motivation behind this purchase is not really an attempt to try and fix anything that I don't like. I am considering this purchase more of an experiment to see if there is anything else I can bleed out of my current speakers before attempting to go full bore down the path to a replacement set. I have tried to maintain as balanced of an approach as possible in regards to component costs relative to the other components in the system. Despite these efforts I now find myself at a point where the sum of my power delivery parts over the years has grown to twice the cost as the speakers themselves do.

I suspect, like many others on this forum I am also hoping this will be the last purchase of speaker cables I ever need to make. Boy wouldn't that be nice!

Here is my current setup below:

Bel Canto DAC3
PASS Labs X250
Logitech Transporter
Wadia i-170 Dock
Rotel RCD -1070 Cd Player
Legacy Audio Signature III's
Front end components run off of a Shunyata VRay on a dedicated 20 amp circuit
PASS Labs amp runs off of a Shunyata Hydra 6 on another dedicated 20 amp circuit
Shunyata Python & Taipan Power Cords throughout

My current speaker cables are made by an outfit who goes by the name of "Raymond Cables". Their store has since disappeared from Ebay where I originally found them. Several months ago I went thru another experiment phase when I purchased a set of the famed "Speltz Anti-Cables" brand after reading so much about them on the web. Unfortunately, in my system they turned out to be a downgrade so back into the box they went and the Ebay specials returned from the dead.

I don't expect there is someone who has heard all of these brands side by side but maybe there is someone who has owned one or two of them in the past that can offer their impressions. In any event, all input and experiences with these cables would be appreciated.

Thanks