Much thanks to everyone for the advice. I really like the footage from the Sony NEX-FS100, especially the Ocean Drive clip.
I think the FS100 is my favorite so far but hopefully we can wait for September and see what people can do with the Blackmagic. In the meantime I’ll try to get my hands on a MarkII/MarkIII and try it out.
If anyone has any other thoughts, or reasons why the FS100 isn’t a good choice, let me know. Thanks again.