Best camcorders/video cameras for recording concerts?

I'm looking for a camcorder/video camera with:

1. Decent sound quality

2. Decent video quality (keep in mind of the dark lighting during the concerts and maybe some flashing lights).

I'm just planning to upload them on Youtube so no editing required except maybe make the video into clips on Windows Movie Maker.

3. It'll be great if it's pocket sized.

There's no budget since I'm just browsing. I heard the Flip was a good one. Is that true? What do you guys use?

BQ: I've been browsing some other answers and I read that getting one with a mic jack would be better for sound. How does that work? (I'm not a tech person so please explain this to me)

BQ #2: If I do end up bringing a camera/camcorder, is there a mini tripod or something I can bring in/sneak in? I don't want my arms to be hurting the entire 2-3 hours.

And after looking, I've been thinking of getting this one:

http://www.amazon.com/Flip-SlideHD-Video-Camera-Wh...

or something similar to it. What are your experiences with recording at concerts?

Thanks! Sorry I'm asking so much. I don't know anything about recording and this is my first actual camcorder that I'll own. ^^ Thank you. <3