After extensive research and testing prolonged, my choice went to this Sennheiser Headset MM 550-X and I am delighted. The MM 550-X differs from its competitors (Bose and Parrot) by its light weight, 190 g, you hardly feel it, even after several hours. The right earphone (Containing electronics) does not heat at all, unlike the Parrot Zik is a real heater. With him over any wire, you can control everything from the headset on the right ear, change songs (Previous / Next), manage the volume, on / off, etc. No need to pull the iPod from the pocket. In addition, thanks to the active reduction system NoiseGard noise, annoying environmental noises are eliminated (Depending on the case, it's still a little bit), allowing you enjoy music in peace. I've experienced in the Garden of Batignolles, one afternoon, I quietly listened to various songs, sitting on a bench in the shade of acacia trees; all of a sudden, a portable compressor, next to the garden, was started (Shipyard in preparation for the extension of the M14 line); I then activated the external noise reduction system and it is as if the compressor had stopped and without any effect on the quality of music except maybe (suggestive effect?), a very slight reduction serious.
