Have the unit for four weeks in daily use, especially on the bike. It is great that it is easy, you hardly notice what so while wearing (cycling). Had previously the AKG 450, which, because larger, even more displacement and therefore Bass has, but is much more difficult. Something quiet of Sennheiser is (was but also the AKG), am almost always in the upper volume area. Sound nevertheless convincing. Short: For go exactly right. The remote control for the iPhone (4) is super. Works flawlessly. Finally no more male pull out in your pocket, if you have a short talk to whom. Am satisfied!
