Okay, I'm reading page 14 now, and I've still got 12 to go. But I can't resist giving the OP a massive thumbs up for his experiment. It also shows how difficult it is when your "beliefs" are shaken, like when a cheap China made copy you bought for use in bad performing conditions (outdoors, bars) turns out on par with the expensive US made original you had been cherishing for so long. At such moment, one feels the need to think: "There MUST be a reason: maybe it will show in time, when I'll see which one holds its value, and which doesn't." One can also be a victim of bad luck, like the famous "been made on a friday" (over here we say "monday" actually), bad storage conditions, clumsy handling, hidden defects concealed within a piece of wood, metal or even plastic.
This type of experiment also points out that a human being should be capable of getting over such things, and learn from it.
This type of experiment also points out that a human being should be capable of getting over such things, and learn from it.