Upload & Sell: Off
worth buying a D3 as a upgrade from a D700? I plan to keep my D700, but want a body that is a bit more rugged and can take a beating! Yet is better or equivalent to a D700.
Last time I went hiking I brought a d5000. I would not dream of bringing the D3. At most I would bring a D800.
It always amuses me to read of something "feeling solid", as the implication often is that that something is simply heavier --tape a brick to a P&S and get the feel (but no better protection)! I've not noticed (m)any reports of where a Dx00 body fell short of survival where a full "pro" body would've made some difference --that might be a small window to open.
The OP talks of "war zone" except hiking clearly isn't that. Maybe the more likely issues with gear will be of the "oops, DAGNABIT!@" sort that will ruin any pro body (which don't float, e.g.), and the better plan to seeking some "upgrade" which will likely be felt only as gratuitous weight is to take a pair of smaller --but adequately robust-- bodies? Which enables fewer lens changes? Or pocket something like the RX100 really small body, as a back-up?