This.I just received the Zoom Q3HD and love it. The sound quality is amazing. I bought it so we can record our performances for us to review/critique later.
We had a rehearsal the day that I got it (don't have a tripod for it, yet), and I just turned it on and set it on a shelf. I was amazed at the sound quality, since when we rehearse the only vocals in the room come from a floor monitor set up for the singer to hear himself (there's enough bounceback off the ceiling and walls that everyone else can hear him, too). It has a stereo mic, so there was pretty good stereo separation and panning around the room,
With a tripod and experimenting with camera placement, I think I can get some really good rehearsal videos.
I just got a Q3 last month. It's an excellent recorder at a great price. Check out all the reviews for it online. I bought mine for about $200.
It will totally change the way you practice/rehearse. Audio doesn't lie.