After unsatisfactory results with other headsets, I found
this one is a winner.
Member CSX4350 had one and recommended it.
Not all Bluetooth headsets work well with all phones.
When I had my Palm Treo 700P, the Bluetooth connection would frequently drop but the volume was OK.
Now I use a Blackberry Tour and no longer does the connection drop and the volume is much better. Comfortable to wear, too.
Unfortunately actual use is required to see how well any given headset will work with your phone.