So here's the scoop... My D300 is great in lower light conditions than the D2X..no surprise. The LCD rocks. The ENEL4a battery lasts longer than I do.. The focus is so so. Sensor cleaning is a plus, but I don't have much of a dust problem with either body. I rarely use the on-board flash. The ergonomics of the D2x are just plain perfect. I reach for this body more often, solely for this reason. It doesn't look like Nikon will have a DX sensor in a pro body, so I have given thought to how an FX would impact me.. Most of my lenses would carry over with little problem. I shoot primarily wildlife with a spattering of everything else, and I do enjoy having two bodies (D300 on the big glass on the tripod and D2x with the 70-200 shouldered), but truth told there have been instances where switching between the bodies has resulted in a lost shot or two, but not having to switch lenses certainly adds to speed reaction times and my lack of dust problems. Since I never have enough reach, the thought of moving backward in this area by going to the Fx sensor has thwarted me entertaining the D3, and the cost was certainly a consideration. But the D2x, for what I do, excels at times of the day when wildlife is less active..it is the feel, sound, experience of the D2x that keeps it around, not necessarily the performance. (Ok, all you D2X proponents, don't get your panties all bunched up. It is a fantasic body!! It just isn't outstanding at 800 ISO!!). I think the first thing I need to resolve is the loss of the crop factor. So...I am going to mount the 300/2.8 on one body and the 200/2.8 on another and see the difference. The next thing I can't seem to negotiate in my mind is the lower pixel density. The way I see it, the loss of the crop factor will encourage more aggressive cropping in post. The greater pixel density of the Dx format is more useful in crop situations. So, isn't it a double negative? Loss of crop factor and it's perception of added reach, plus the lower pixel density working against you in post?? Obviously there are tons of folks generating some great wildlife images with the D3...but I still have this mental stumbling block.