Hey Birders, do any of you use the 6D for our "addiction"? I need a body that's better in low light and noise control than my 7D plus really want a full frame. Thinking 5MarkIII. At +/- $1500. less, the 6 is tempting, but as far as I can determine from various reading, my needs are where the 5 shines. And then there's the AF. So... Now unless someone wants to give me 7 big ones, this is where I'm contemplating.