ok heres my views on A2DP on the iphone..
I have been using it since beta 3 and nothing has been fixed to work properly with bluetooth devices since then.
The Iphone loses sync and you have to manually turn off and on bluetooth on the phone then pair again as it doesn't pick the phone up everytime i get in my car. But the iphone does sync everytime for making calls over bluetooth, although if someone calls me i have to keep pressing the bluetooth button on the iphone to get the sound out of my car stereo, making calls is always perfect 100%
The music does skip as previously posted, but this is mainly when the screen gets locked or you leave the ipod application, try leaving the charger in and turn off phone locking.
Sound quality is very good but Apple need to have a equaliser adjust setting from the ipod application, at present i am going back to settings then changing it, unless i am doing something wrong.
You cannot control the iphone from the headunit, my N95 and N96 both can skip tracks etc only the volume works on the headunit but the volume on the iphone doesnt?
No A2DP track show, this is a pain but nokias cannot do this either
Overall i am happy with the sound but nothing has changed A2DPwise since beta 3, it's still only half works and considering A2DP is a standard it's a shame they cannot get it right
I am using a Blaupunkt Hamburg MP68