Sound Quality - Im shocked that some think the QC35 is on par with the PXC 550. My job which sees the most wear on them, is at a library indoors on a carpeted area. My 4th pair of Tevas, probably my last. li ho testati fino a due ore e più di corsa e la ricarica è durata perfettamente! One note: the unit I received has shelf spacing of 7. I love the arch in the shoe. beautiful, I loved them ?? Le foto parlano da sole. These are definitely easier to answer phone calls, pause and restart videos, and are not overly sensitive to touch like my old ones. The look is cool as well as the color is perfect for my usual black and grey.