Went through 4 sets of SuperFi Pro 5 cables in less than 12 months & all replaced under warranty, about 2 months after warranty ran out the drivers packed up in one ear, after a load of hassle the retailer eventually agreed to replace.
Another 6 months later the other ear went. If the build qualities improved now Logitech are onboard then they make a great sound, but otherwise i wouldnt touch UE's again with a bargepole.