Christ what a lot of rubbish you have been going on about.
Now then I had been shooting with a D800 & D800E for weddings, dropped the D800 and its focus went again for the second time so I sold it, Bought the D810 earlier than I expected because of the D800 accident.
I shot a wedding last week and used the 810 for about 40% of the images as I had only owned it for a day, my conclusions for what they are worth
Shutter is very very quiet.
ISO up to 10,000 looks amazing, I did not need to go more than that in the church.
If you mess up the exposure at high ISO then its very blocky and detail is lost so you need to expose to the limit on the right.
Af is much improved never missed a shot once where as the D800E often does.
Not convinced about the sharpness its about the same as the D800, the D800E is better.
Video.... not used.
WB was spot on.
I shot in Jpg standard and had little to alter in Lr5
Battery life was much improved.
So there you have it, I did think of going to two D810 but after using it will keep the D800E as apart from the ISO to me there is no advantage in selling it.
Most of the church shots are D810 in this blog of the wedding
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Wilky