Summary: I purchased this and the Motorola MOTOROKR S306 at the same time. Overview of the benefits over the other. The Sennheiser was more comfortable, cut out less, had better sound quality, better build quality, and had replaceable earfoams. The MOTOROKR was a third of the price, used a micro-usb charging cable, did not have the annoying beep when placed on mute, and did not make me look like Mickey Mouse when wearing it.
Pros: Comfort, reliability, replaceable earfoams
Cons: Makes you look like MIckey Mouse (maybe a pro for some), annoying beep when muting, proprietary charging cable (should be micro-usb)
Great product and great value, a couple of niggles short of perfect.
5 August 2012
Summary: Great sound quality and easy to connect and work with. Have had two minor problems including the neckband getting twisted slightly out of shape (partly due to flat postage) so it's marginally uncomfortable to wear for a more than a few minutes, and the buttons seem to decide not to work sometimes (e.g. can't adjust volume, or can't switch off without toggling connection with phone).
Summary: The MM-100 is one of the better BT headphones out there, but it's not perfect. Ive owned it since Feb 2012. This headset connects easily across multiple devices with no trouble. The construction appears weak, but you want something light on your head if you're wearing it for hours. I listen to a wide range of music. Hip Hop, Dance, Rock, etc., sounds great with moderate bass and dynamic sound.
Pros: Connects easy, lightweight
Cons: Proprietary charging cable, faint clicking sound in right ear