In reply to mark s:
Personally I would go with a mirrorless system if I had the money i.e. the juji x-t2. dslr's still have their place but mirrorless tends to be the way forward now and lighter too.
If you're certain you want FF dslr then I would go with the original 6d and better glass for the same price, DR isn't so important if you know your camera limits and shoot accordingly. The better lens will make more of a noticeable difference than a few pixels.
I still shoot with a 60d and manage to capture the full DR, it would be easier with a better camera capable of more DR but it's what I'm used to.
When I have the money I'm going for fuji.