OK, I know that long exposures = more noise and higher ISO = more noise, what I need to know is which one is worse? I'm going to be taking some pictures during a choir concert and a band concert and, obviously, do not want to use flash. The last time I tried this, I just bumped the ISO up just enough to take a handheld shot (at about 1/125 or so). The results were OK, but I forgot the zoom rule (1/focal length for handheld), so I zoomed in a blew a few shots due to shake. I would like to avoid a tripod for the most part, but what I'd like to know is if I should really crank up the ISO pretty high (800/1000) and use as fast of an exposure as I can, or shoot for a certain shutter speed (what? 1/250? 1/300?) and adjust the ISO and aperture to get a good exposure?