The 7 month old BlueAnt z9i headset I own recently started to stop working, likely due to the earpiece loosening.  I thought I would need to trash the device and switch brands – Jawbone 2 was at the top of the list.  Before buying the Jawbone I decide to try contacting BlueAnt: BlueAnt Contact Us. To my surprise after ~3 minute phone call with one of their CSRs (who answered the phone immediatly  – i.e. no IVR menus to navigate) I was told I would be emailed a replacement form and that once completed they would send me a new one.  Impressive – good customer service!  They did mention I could only do this once however.  All in all, I hope the rest of the replacement process continues to be as smooth and easy.  Stay tuned…