Finally got my pair from B&H this afternoon - almost two weeks after ordering it, but that's another story.
Been listening to them for a few hours now. So far, so good. I can see why people say that these have a "reference" sound.
As far as putting them on "correctly" - I haven't had any problems finding the right position for them on my ears, so I don't know how much of an issue that is. I did, at one point, yawn while I had them on, and they shifted just a tiny bit forward. When they shifted that tiny bit, they sounded noticeably different. Maybe that's what people are describing?
I will say that these clamp down on your ears pretty good. Hopefully that lessens over time - my ears were getting sore from being pinched after about the 2 hour mark.
In any case, I'll give it some more time and report back if I notice anything. I did check out the Amperiors at the Apple Store today. Those were good too, but a) they're a lot more expensive, and b) they sounded just a bit more brash in the higher frequencies to me.