Re: The best audio?
 

I have a GoPro2, but would never think twice about using it's audio. Here's why. Go ahead and record something with it's built-in mic, then play it back. You'll hear a lot of artifacts in the audio, especially on the high end of the spectrum, as if it was recorded at a very low sampling rate. Hearing this, my conclusion is that even if you could connect the best microphone in the world to it, the audio will still sound poor because the problem isn't the microphone, it's the low sampling rate.

Re: The best audio?
 

I'm still committed to walking this problem through all the way to a resolution. I sent the GP customer service people a (better) youtube link so they can listen to what I'm hearing.
Meanwhile, I sent the Boss mic back.
The other mics are still here for a few more days.
But GP seemed to suggest that if they are concerned enough, they might suggest I send the camera in for them to look at. We'll see.