The Sony EX-71s are the worst audio product I've ever bought.

Horrible sibilance on some track made them virtually unlistenable. Also when you're wearing them while walking around you get a nasty swish swish sort of sound transmitted into your ear - must be through movement of the cable. Also while outside if its windy you get a really exagerated wind noise - no idea why that should be, presumably something to do with their shape in your ear.

Nasty.