Bob,
I agree with you in principle, but every now and then there is a significant change in design or technology or a combo of the two which leads to an easily audible improvement in performance of an audio component. Teflon capacitors in preamps is one example. I am beginning to suspect this may be true of the AQ Storm series of cables. I don't have unlimited funds but enough to update when there has been an improvement as described. lest you think I follow audio fads, I am still using a Krell FPB 300cx purchased new in 2002, and a Sansui TU-1X AM/FM tuner made in 1977, I think.
Cheers.
Neal