Don't see too many complaints about either camera, really, but for those of you who have or had tried both, which do you prefer?
You can't really go wrong with any of these, they're all very fine. I would think about the light (do you need fast lenses?), how much reach you need (do you need a tele?), and whether interchangeable lenses and backs are important. Also think about where you plan to be in a year or two i.e. whether you will augment the camera with another body or another lens.