Okay, I've had some time to play with Bluetooth A2DP stereo on the $29.95 Insignia (BestBuy house brand) NS-BT400 A/C powered speaker.
The speaker is surprisingly solid, with nice heft as well as sound. It also has a standard audio-in jack so you can use it for wired audio connections. It does require A/C power however. It even has a "well" on the top where you could rest your iPhone vertically (but not horizontally). It looks like it ought to have an iPod dock... but it doesn't.
On the top of the speaker are the audio controls and this part is important. Volume is controlled on the speaker. Pause, play, rewind, skip are ignored... for that, you need to use the iPhone.
On the other hand, if you change volume on the iPhone, it's ignored.
In an earlier post, I wrote that the Motorola S9's controls were able to control the volume on iPhone/iPod. Volume is indeed controlled on the S9 and not the iPhone, BUT again Pause, Play, Rewing, Skip buttons are ignored and must be done on the iPhone. This is another area for Apple to work on.
There was still the stuttering I wrote about earlier, when using CoverFlow or using the iPhone for other purposes. Apple still has several months to iron this out.
When listening to videos, there is a noticeable delay of 1 to 2 seconds, so lips are out of sync with dialogue/music. I had hoped to use this for projecting movies via a pico projector, and using the speakers wirelessly, but this isn't going to work. Especially since one way Apple might fix the stutter is to build in an even bigger delay.
Distance however was surprisingly good. I will have to make specific measurements, but I took my phone down the hall, almost the length of my house and the audio kept playing.
Also, this time, I *WAS* able to access the numeric keypad to enter 0000 to pair the BestBuy speakers. I deleted ('forget this device') the Motorola S9, and reinstalled it and didn't even have to pair it.
So those are the quick hits. Obviously, it's not fair to Apple to treat this as a finished product, but on the other hand, A2DP is not bleeding edge and has been available for other phones since the iPhone came out, so it's not unreasonable to expect more. I'm working on a more in-depth matrix with more headsets, etc., and plan to publish it in iPhone Life magazine, where I'm a contributor (
www.iPhoneLife.com/Todd.Bernhard). Stay tuned!