6D vs. 7D Mark II

I'm a 50D owner and I expect that next year I will upgrade.  As I'm more interested in landscapes than action photography I think an affordable FF is the way to go, so I'm interested in the 6D but not ruling out the 7D Mk II (assuming it's available by then). I see that people are beginning to post images taken with the 6D.  Unfortunately most of the images I've seen have been taken at very high ISO, which is of more interest I think to the person doing action photography and that's not the intended market for the 6D.   I'd really like to see how the camera performs at its lowest ISO and in particular I'd like to see shadow detail in well exposes images at low ISO.  Does anyone know if such images have been posted anywhere?

Thanks,
Peter