Not what you are thinking of, but the best would be the Zoom Q3HD.
I have been trying to research this issue but can't find a lot of information on it so I hope people can speak from experience.
I used to have a Canon PowerShot SD780 IS. The microphone was my favorite part. when I recorded video at concerts it sounded great. Big surprise, the lens error happened. Now I have a powershot elph 300HS and the audio quality is really muffled and not even close to as clear at concerts.
I don't really know the difference between the microphones except the SD780 was mono, and the 300HS is stereo. I read something that said because it is stereo the concert sound is worse. I can't confirm this.
I go to a lot of concerts and I loved how the sound on my SD780 IS was perfect. The lady at canon suggested that the 230XS microphone is bigger and "may" be better but that is stereo as well.
Any suggestions for a point and shoot with a great concert microphone would be awesome. The websites really don't give any information on the microphones besides stereo or not.