All of these headsets are *****.

They do not support a2dp so you cannot stream music, navigation voice from PDA or Radar detector warnings ....
Only thing you can do is to use phone hands-free, but that is a bit useless
The best solution is still wired headset.
I was also experimenting with SonyEricson a2dp headset.
Earpieces are very small so it fits under helmet. The only MAJOR problem is that the battery runs out in 2 hours of radar detector usage... so again you have to wire it to power for longer rides.
Additionally you cannot have more than one Headset profile device and one a2dp device paired and active together with it. So it was either radar detector sound or PDA sound, not both
Today sick of these stupid BT solutions, I have got headset from Starcom.( just the headset only for 40 Euro). I made connector conversion to plug radar detector directly into it and it works nicely !! no battery out problem !! I will also plug my PDA phone with TomTOM to it next weekend. (just soldering wires together)
Not going to spent fortune on Startcom solution