So what I want to do is, on the face of it, not that complicated - at least in terms of putting down the words on paper.
I want a wireless bluetooth receiver with transport / volume controls, a 3.5mm jack and some sort of support for better-than-SBC codec, and one that can pair for music with multiple handsets/laptops/tablets in addition to being able to take calls on at least one of the handsets.
Many jacked headsets like the Nokia's BH-series, the Samsung HS3000, Sony's equivalents, etc do advertise multiple pairing to a degree - at least two devices. And some of them also satisfy the requirement for a better-than-SBC codec, though of course sadly it's not always implemented on the device side.
Problem is, I've never got multi-pairing to work. Most recently, not on an iPhone 5 / Lumia 920 / Xperia Z / iPad (current gen) / Surface RT / Thinkpad Tablet 2 or Surface Pro mix (on more than one of *any* of the devices).
Has anyone else managed to get multiple pairing headsets to work? Is there a more reliable but still portable solution, such as - and I very much doubt such a device exists - a multi-radio Bluetooth audio mixer?