Mine won't even pair. The Ford "can't find a device" and my Eris just counts down the time it's discoverable ... My iPhone paired and downloaded the phonebook on first pass. Synced up automatically every time I sat in the car and never dropped a call. Sound quality was exceptionally good with my iPhone - whereas the Eris often sounds muffled or scratchy and drops calls more consistently than it keeps them.
I just spent the last 2 hours trying to make the android phones link to sync - with even more time spent digging through the blogs, google searches, and meticulously following the instructions that came with the phone - and not ONCE did either phone work with my Ford.
For all the hype and rage against Apple on these blogs - in my personal experience - the iPhone is FAR more user friendly. Droid manufacturers should look at what works with the iPhone and make it possible with the Droid.