On Sunday I chatted about bluetooth connectivity. I have the Scala Q2. Info @:
http://www.cardowireless.com/MultiSetGood deals can be had at Ryda 730 Paramatta Rd Petersham. GPS also available there.
The multi set gives 2 complete individual units as opposed to the teamset which is rider/pillion.
As some know, I installed a cigarette lighter beneath the seat and had it wired to my electrical system as opposed to the battery directly which may cause battery run down. I connect the charger from my Nokia 6110 to it and can go all day with my music from the phone plus GPS directions (except on Sunday lol) and of course hands free phone calls).
Ryda also have security packages for bikes but I didn't check those.
Any questions, just ask.