The Sony DR BT 21 G costs about £65 new, is pretty comfortable and works well, but they have a quality control problem. The first pair that I bought only worked on one side. Back it went to the vendor. The second just stopped working and wouldn't recharge juuuuust after the guarantee expired. It's possible that I just got unlucky, of course, but I'd be very wary about buying these again, at least not unless I bought them from a very reputable dealer and with a five year guarantee. Another potential issue (which I didn't run into because they broke before then) is that the foam pads appear to be the same as on a similar pair of Sony wired headphones that I have. Those have, over the course of about 5 or 6 years, completely disintegrated.