I have in my car a Parrot CK3000 (old) BT carkit.Now I can control my phone (Sony Ericsson K800i) using Phonecontrol (but also Freephone)
When I press one of my contacts on my touchscreen the Parrot carkit takes control as soon as connection is made

Sound is then going through the car-kit speaker
If I want to hang up , I can use my touchscreen or the BT carkit button.
Until know I only could makes this to work only together with the K800i
I tried already several different types (K600i, W800i) but none of those could do what I have now in the car.
If you cant find what your looking for ,this could be something for you
