Are there means to try some of these cables for 30 days and see if they really make a difference. Money is not the object here, I can and have spent plenty ... although I just use OFC (oxygen free copper) 12 gauge and I honestly can't imagine that dumping $1000 or even $10,000 on speakers cables versus $100 is going to make my speakers sound any better.
(for prospective with regards to amp/speaker equipment, etc, I have McIntosh amps and Utopia speakers)
Side note, I often wonder why something like Noalox is not used in the speaker connection world, it's used for electric power panels on the input power lines to increase connectivity, the grease itself can carry voltage, and it would seem like it would help keep oxidation off the copper connections as well (if using raw copper)