A Bluetooth headset that runs on a PC and a Blackberry?

I got this note in from a reader by the name of Richard and wondered if you’ve got some perspective. It’s been a long time since I played around with Bluetooth headsets — the last time I did, every time I switched on the device I felt terrible.

So I’ve stayed away from them and thus, there’s a bit of a blind spot.

Have you got some suggestions:

Hi Ewan, Can you recommed a bluetooth head set that can be used on pc and for my blackberry. also with the feature it can run both systems at the same time. let me know your thoughts. Thanks

Any ideas?