A lot of it is preference. 24p seems to give a more film like appearance because it real film is 24 single frames a second. The problem with 24p and high motion material is that there is fewer frames to capture what's going on every second. 30 frames gives the camera a little more time each second to capture the action. That's why fast motion can look blurry at 24p. If you're filming stationary, low motion footage 24p is fine. For live music I wouldn't use it. 30p and 60i are both 30fps. 60i captures each frame as 2 separate fields, and odd and an even, and interlaces them back together 30 times a second. 30p records 30 full individual images each second. I don't find there to be a major advantage in going with 60i over 30p. For me the progressive image I get with 30p gets me a little closer to that elusive film look, but it honestly doesn't make a HUGE difference. The advantage with 60i is that it's a standard frame rate and you don't have to do anything special to deal with it. 30p is still easy for any NLE to work with and if DVD is the end format it works fine. The DVD player will just break apart the progressive image and reassemble it if it needs to. Render your MPEG file as NTSC with progressive frames and it works fine.