Best sleep I ever had (by far) was when I was smoking marijuana the night before.
As for finding the "one" headphone, I've never had any interest in that. I like having a headphone harem, cause it's fun for me to have some variety and to allow different phones to serve different purposes. My T1s have traditionally been my movie and techno/EDM music phones...my Grados have been for folk and most of my web surfing...my trusty 1350s go in the car an to the office with me..etc, etc. I've really enjoyed having the harem around, but then something happened. I ordered some Audeze LCD-2s. I sort of figured this might happen, because when it comes to speakers planar magnetics ruined me for all other box speakers - namely the Magnepan line.
When I took delivery on the Audezes, I listened to them nearly all day, every day, for the first couple of weeks. For the first time ever, I noticed that some of my other phones were actually starting to sound worse and pale in comparison to the Audeze. This was really bumming me out, cause the ones that were most affected were my beloved Grados. The PS500s held up ok, but the GS1ks and 80s took major hits. TheT1s held up pretty well, but the 1350s faltered a bit. And then it got even worse...
It was right around this time that I first heard that Audeze was coming out with two new models. I wasn't sure if I was interested in sending back the 2s for the LCD-3s, but the LCD-X sounded like it was right up my alley. So I sent the 2s back until I could get a few more bucks in the bank, and last week I pulled the trigger on the order. So as excited as I am for the Xs to arrive this coming Tuesday, I can see the fear in the eyes of my other headphones. They are all lying in the corner on the floor, in the fetal position, shaking...it's like they can just sense that the mighty LCD-X is en route.
So anyway, even though it was not my intention to settle on ONE headphone, it wouldn't surprise me if that's what happens starting two days from now.