I've repeatedly tried to use in-ears over the years, as over-ears take too much space in my cabin luggage, but hated each and any model/make when walking or running because of the mechanical noise transmitted via the bone system. I've bought me a B&W C5 S2 after the shop staff at the airport surprisingly remarked the importance of a thorough listening test before any purchase, which is nothing new to me, though not quite what airport shops have been great at, ever.   I'm surprised by the fact that no one realized how these are possibly the only...