You really haven't got this yet have you.
Pretty much seemingly anyone interested in the hi-fi industry is seemingly biased in one way or another.
Mags are full of mega-hyped kit, most online reviewers take no account of personal preferences, and most owners when asked for advice will simply tell the OP to buy what he has, cos otherwise it would hurt his ego. If you don't believe me on that, checkout the AV forums. Here's a typical exchange:
"I'm looking for a CD costing £400, what do you recommend" (in other words I can't be bothered to use the search function).
Poster 1:
"I bought Product X, yes it costs twice the amount, but it's the dogs, just buy it".
In short, don't trust ANYONE'S thoughts but your own and the only way to prove that either way is to have a listen.
Again, echoing above, you seem to have missed my point of this thread (i'm not getting at you, i just might not have made that clear).
This isn't about people's opinions on whether X is better than Y - it's about finding some credible evidence that gets away from peoples opinions by using scientific measurement. How can you accuse the results of an A/B/X test of bias? I have looked all over the net and am yet to find any kind of test that suggests people can tell a difference with this stuff and all i'm getting in reply is "i know it makes a difference because i can hear it myself".