I ordered the Blackmagic 4K, Panasonic GH4 and Sony FDR-AX100 a while ago and received the Sony a few days ago.
Took the family on a business trip to DC and made some run and gun sample clips the first day.
I did not have time to play with gain or such so all you see are auto modes.
Night time
on my Sony XBR65X900A 4K screen, this demo loop from the FDR-AX100 seems to be as good as those from the FDR-AX1.
The twilight portion looks cleaner also.
77 minutes 1080p footage using a number of cameras including the Canon 5DM2 and the new Nikon D800 for a kids' musical at my local school.
Pro Bono work. ;D
http://youtu.be/daz1lSxkNjI?hd=1