Not a wired suggestion, but you should try out the sony MW600 bluetooth stereo headset,

pros:
>It works with the N9, the media controls and call answer/reject works.
>Audio quality and range is good.
>Supports 3 devices.
>Has inbuilt FM.
>Is not as expensive(at about $50)
>If you have a black N9 then the Black Mw600 looks surprisingly similar to the N9, it also comes in white.

Cons:
>It only shows numbers, and doesn't show contact names.
>As with any bluetooth device, it needs to be charged, but the battery will last longer on a charge than your phone battery.
>It has a stereo jack so you can plug in your own headset to it, the bluetooth has its own mic.
>The volume control is touch sensitive(and its sensitive), if its in contact with your skin anywhere your volume keeps rockin
>The batteries will eventually wear out and you'll have to replace the device. I believe there's no user replacable batteries.