I bought a 6D Fall 2013 and have been on a shooting binge, gaining a good feel for the features and performance of this camera. I also own a 5D MK II and 60D so it's hard not to notice the 6D is a marriage of the two older cameras: full frame innards of the 5D MKII coupled with the petite form...
easy on the shoulder; amazing image quality
No FEC button; missing popup flash