Being as everyone has there own specific needs, it may be best for someone to offer you some of the most popular options to at least narrow your search down. I always say that you should get a camera that works with your shooting needs, and that's the one thing that you left out. What will you be shooting? If it's for personal projects, you may not need something as elaborate as the FS700. You can get an FS100 or an AF100 very cheap now.
DSLR's are a good option. I see that you are not in favor of that, but I'm trying to figure out your logic.
The ability to follow focus on these cameras are no different than an FS100/700, AF100 or any other interchangeable lens system. Does that mean you're looking for autofocus? You'll have to buy a fixed lens system for that. You might try one of Panasonic's HMC line if that's a big issue.
For audio, you might want to look at a DSLR with manual audio controls and buy a simple XLR adapter. The 5D mkIII, Nikon D800/600, Panasonic GH2/GH3, and some others have manual audio control. Or you can record dual system. That's what we do on every set. We always have a sound mixer recording to his own recorder. That is unless you are not doing narrative work, or do not have a crew; you haven't said if that's the case.
You say that DSLR's are not designed as video cameras, but the show Wilfred is shot exclusively on DSLR's (5d & 7D, and now Nikon D800 with external recorders.) At this point in the game, so many things have been shot on DSLR, it's mind-boggling.
Really what I'm trying to say is: It's not the camera that makes a good project. So many things go into making it, and you just have to find what fits your situation. And you haven't even mentioned an even more important aspect of this purchase; what lenses are you going to use? It is way more important to have high-quality lenses than a fancy camera.
That's just my two cents.