To Diamondears, I'm so glad you say that they are better than the expensive headphones. However I have the Philips x1 and cannot tell much difference in the clarity of the individual sounds. The main difference is the sound signature is more up front in the mids with less bass bloat and the soundstage on the m4u1s is narrower. I do prefer the m4u1 sound signature and it is energetic for snare drums and cymbals, but to my ears, there is so little difference compared to the x1s and the Yamaha hph200. I guess that the high end headphones have very subtle differences compared to mid-fi ones and that it is all about accuracy and neutrality.