I have the D3 with CD-BTB200 bluetooth. It has worked perfectly when I had the Motorola Q and the Q9c. I just upgraded my phone to the new HTC Touch Pro and while the phone recognizes the Pioneer Bluetooth unit and says it connects, the bluetooth unit tells me connection error.
I've heard of other people having the same problem with this phone. Some people have downloaded a 3rd party Bluetooth manager program called JETware. With a brand new phone, I don't really want to do that if I don't have to. Spoke to HTC and they do not have a downloadable hotfix available yet but that they probably would soon because they had to do that for several other phone models in the past.
A few other people who had Kenwood Bluetooth units in their cars said they were able to download a firmware update from Kenwood for their Bluetooth units. They then used their bluetooth enabled laptops to connect to the vehicle bluetooth and install it.
Is there any firmware update available through Pioneer that anyone knows of? I looked on their site and didn't find anything.