Unanswered: Any smartphones that connect to Bluetooth car kits and work!

I own a HTC Touch2, (running Windows 6.5)

I can connect it up fine, but there is an annoying glitch!

I can make outgoing calls, answers calls, access address book etc, but ending calls in a nightmare!

What happens is that I have to end the call on the handset, and cannot end it from the handfree kit! Further, the handfree kit does not sense the ending of the call, and ;hangs; as if the call is still being made.
The only way that I can clear this is either by turning ignittion on and then off, or altertively turning the phone on and then off.
(Both a pain when on the move)

I am therfore wondering what other users have successfuly used their phone with:-
What are users exereicnces of:-
i.
Other WIndows 6.5 phones?
ii.
HTC Wilfire (Androind 2.1)
iii.
Samsung Galaxy Portal I5700 (Android)
iv.
HTC HD mini (Windows 6.5)
v.
Apple iphone 4
vi.
HTC Deisre
vii.
Samsung Galaxy S

Any other Smart phones that work well with the handfree kit!?