Re: Bluetooth headsets that do and don't work correctly with the Widcomm stack
 

Blueant Q1 no issues. Voice command works fine.

Parrot MKI9200 in my 04 Land Rover will not hang up at the end of the call using the remote.

09 Lexus GX470 - Same issues that the Parrot is seeing. It will not terminate the call.

Re: Bluetooth headsets that do and don't work correctly with the Widcomm stack
 

The Moto S9 HD is hit or miss with calls. I do not rely on it at all and have resorted to taking calls via the phone itself. BT Stereo works flawlessly though.

Re: Bluetooth headsets that do and don't work correctly with the Widcomm stack
 

Chrysler U-Connect (in 2009 Dodge Ram with RER radio):

Issues with initial pairing. Took 8-10 times to get it to pair. Once paired, I cannot reliably answer or hang-up calls. Audio is fine, if it does connect.

Re: Bluetooth headsets that do and don't work correctly with the Widcomm stack
 

BlueAnt V1 seems to work fine as well, fast pairing, good quality.