6D and 5Diii

MFG wrote in post #15458328
With the 5D3, i can have Sandisk extreme pro SDHC 95mb/s and Lexar Professional 1000x CF cards. Reliable to the max!

JohnThomas wrote in post #15451798
The 6D is not a bad body by any means, but when you handle it, it's clear it's not in the 5D family. Image quality is fantastic, as your post above notes. It's the lowest pixel density for a (Canon) FF sensor so I'm not surprised by the DXO marks or the noise samples you posted.

Based on my experience with all three, the 6D has superior low-light focus performance. I'm not talking about maybe or marginally, either. I also think the 5Dii has better low-light performance over the 5Diii, but the 5Diii image quality makes up for it. For what it's worth, I tried using the following 5Diii AF setups in both Case 1 and Case 2 AI Servo modes:

AF Point Expansion (manual selection)
AF Point Expansion (manual selection, surrounding points)
Zone AF

As awesome as the 5Diii is, I feel like it's overkill for me. I have to believe that a lot of it's cost is in the AF system and my style of shooting basically neglects it. Maybe I'll get used to it as time goes on and I'll be able to take advantage of it, but for now I'm in using that insane 61 point system in manual single point center.

PS - There is no one-button access to FEC on the 6D. Huge bummer for me. The only way to control FEC is through the menus on the 6D or the speedlite itself.