I was able to grab some footage from the PMW-100, PMW-150 and PMW-200 on the Sony booth . Here it is, it's ungraded, all the cameras were set to 25p with 1/50th shutter, 0db gain.
Not very scientific, but if nothing else it shows that the cameras are well matched. What I observed was a steady decrease in noise and increase in sensitivity as you went from the 100 to the 150 and the 200. The 100 had a lot less dynamic range than the other two. The difference between the 150 and 200 isn't massive but I do prefer the 200's pictures.
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