I've owned a few BT headsets in the past and these are by far the best ones so far. Overall sound is enjoyable, and the bass is never wholly lost - even in windy environments. They won't trump wired sets like the aforementioned Ety's, but what do you expect for £67!
Fast pairing process; Light; Great noisecancellation; Great sound output
Earpiece isn't the best design; Vibrations heard when the wire is hit/tapped against