kashou, I was so sad to return my HS850. I did so for the same reason you mentioned and will miss it for the same reason as well.
verticl, I have used an earlier Jabra on another device and given up on it because of battery life, but that doesn't seem to be a problem now. I am really looking for quality sound, especially on the receiver side as I talk to customers all the time.
I am hearing that the Jabra crackles and is not good in the car due to background noise.
Are you using the Jabra with a 7250? I will definitely post my impressions when I get the device.