I bought one of the first D800 bodies that came available back in March. I used it until my first D800e arrived...I believe that was July. At the time, I was really into testing and calibrating my camera bodies with FoCal. I saw a substantially higher AF sharpness with the D800e for every lens I tested and with every test. When I looked at the test target images, I could see sharper transitions from black to white with the e. When I shot field tests, the images from the D800e had better contrast and were sharper.
As I concluded the testing, I realized I would never use the D800 when it came to a body choice for a situation because I would always know that I was going to get "less" of an image than I would get with the D800e.
It was a tough decision because of the transaction hit. but I decided to sell the D800 and buy another e. When I received the second e, I went through all of the FoCal tests again. I found that it was not as sharp as my first e copy but still substantially higher than the D800 that I just sold.
Now that I have two D800e bodies, I know that I am getting almost the same quality no matter which body I pull from the bag. However, one body did produce higher AF sharpness with the longer lens than the other, so I tend to use it with the longer lens.
I have taken thousands of shots with both bodies on two major shooting treks...landscape with NANPA and BIF with David Hemmings. I have also done a lot of landscape HDR in between. I have yet to see moire in an image.
I have found that I have to reduce my output sharpening with the D800e...sometimes half as much as I was doing with the D300 or D800...especially with HDR images.
Just for grins, I will show you below a before and after BIF image I shot with David Hemmings last week to show you how much detail you get in a D800e image that allows you to crop to extremes if you have to do so.
Here is my original best kingfisher shot done with a 200-400mm (they are shy and hard to approach):
Now here is an extreme crop of that same frame:
While I would rather have better details for the kingfisher, and I plan to on my next BIF trek to that same area, I could still use this image for illustration such as this.