Well, at least everyone has been honest!
As Zaikesman has pointed out, there are lots of variables here and both "tests" (as well as everything I have done) may not be particularly scientific.
So do the results so far invalidate my (or other peoples' positive) experiences? Not in my opinion, I'm quite comfortable with what I have found and what I hear (whether it be psychological or not!).
But this excercise clearly does show (at least in my opinion) something that I wrote here a few years ago in my review of the World Power receptacle. And that is that if you are using multiple receptacles within a system, while a sonic change may be detected, it is difficult to really ascertain the true character of any receptacle. Also, any of the experimentation I have done involved living with the same receptacle throughout the system (wall and line conditioner-so at that time it was 3 receptacles, all identical) for a few months and then inserting new receptacles. For me, it was much easier to hear differences with my system in this situation as you listened to the same system (and music) for a long period of time before making a change. In my experience, under these circumstances, changes for good or bad are pretty clearly audible. Just a couple of thoughts, whether they be scientific or not. As I've said to Zaikesman before, even if he does replace his receptacle at the wall he is only part of the way there, as he isn't going to really be able to make a judgement until he replaces the recepacles in his line conditioner as well. And that is more work than most people want to do.