Thank you Noah,
Shooting anything progressive (at least with this camera) changes the file size allot. Instead of 3+ hours with HE1080 60i I get only 49 minutes with PH720 24p. If this is the case I should probably shoot it at 1080 24p for the best quality, right?
I was able to take a look at the test footage and it actually does not look too dark when shooting in the lowest quality (3+ hours) as the lights are pretty hot on the dancers. There is some more noise but it’s not bad… should I still stick with 24p (and get more SD cards)? I’m guessing more cards and 24p would be the safest.
Also, there is a “spot light” setting. Is this actually any use? I just came across it but have not had a chance to try it. The low-noize seems to be a little help but not too much.