I would love to get the D810, unfortunately, AF tracking of moving subjects is one of my needs. I wish more than I can express that a DSLR or mirrorless system would work for me, as I would find it much more useful, overall. I have been waiting forever for the D4x to come out, but I guess I'll be in a retirement home by the time that happens...the D4s is not what I am looking for....which leaves the D810 as my best option Nikon has right now. As a stills body, the D3x is a fantastic camera, but I would find the D810 quite nice to have, too. Tupp -- yes, I do my best to be sure everything is thoroughly dried if I have been working in the rain. Stills are my main business, and I cannot really so "no" to photographing in the rain, but try to limit it as much as I can. For video, I could just not do it if it is raining, but the dust......I cannot escape the dust!