Able CineTech has put together an HDSLR camera comparison chart . They've also made it a down-loadable PDF file too. However, I'm not sure why the Nikon D90 isn't included since they started the whole HDSLR trend.

At the time I made Rejouer, I only had the Canon 5D and GH1 to consider for making a feature movie. As you can see by the chart the GH1 provided a few advantages 24p, 1080 x 192o resolution and a disadvantage of no "live" monitor output. The chart also lists the GH1 as the only camera that can have a PL mounted cinema lense attached to it. That is because my technical consultant, Illya Friedman of Hot Rod Cameras created the adapter specifically to shoot Rejouer. This allowed us not only to capture a greater image using higher quality lenses, but also an easier work-flow on set since the lenses were designed for motion picture use, not still photography.