right, I was just trying to get a little bit on track again with the main question: "Any good reason to stay with canon?"
and the answer is absolutely. It's been established that dynamic range is better with the sony sensor, however, dynamic range is not everything. Final product is everything.
Definitely depends on what you shoot. DR really never plays a part in what I shoot, most of what I shoot has a pretty narrow DR, even when I am outside. So it comes down to other factors for me as to which system I use. Now pulling an underexposed shot up 2 stops or so is something I do, so I need enough sensor performance to handle that without banding and creating noise artifacts. Canon's banding issues have been greatly reduced, but still does rear its ugly head from time to time on the newer bodies.