First day really shooting with it yesterday. I have to say I'm very happy but I am coming from an original 5D so it's a pretty good leap for me.
Really impressed with the auto focus as it worked really well on my constantly moving kids. Only battle I had was with them running around and it being overcast going from bright full sun to completely obscured sun. Was able to push in post some of the underexposed shots and still like the results.
Example shot (not my favorite photo from yesterday but was surprised by the detail in the hairs on the back of his shirt):
very nice shot (great color, focus and composition) and your son looks really cute