I concur with Justin on 50/60p
 

it was most disappointing to use the JVC in 50p, admittantly I used it in a pretty torturous environment. Camp Drafting cowboys chasing cattle at high speed with trees in the background, but the macroblocking even with people in the background was disenchanting, I think I'll stick with 25p with a higher shutter speed like 1/100th second in the future. Also gives more editing options.
50p probably is better for fast moving shots which don't need excessive panning.