Thank you gentlemen for you views and observations Bill, Interesting that you are thinking of going back to DX for the weight issues. And that you both feel that the D300 and D700 are close in many ways. Both you and Brian mentioned that I did not state why I wanted to go to FX and my answer in part is, like Brian said, I thought that it was better. I am also afraid to be left behind by these leaps and bounds brought to us by Nikon, more insane pixels and ISO's and more video gimmicks and more price. Once the D700 is gone my opinion is that anything newer in that ball park will have video and XQD cards(which no one has a reader for?) If I have it right the superior DX to the D300 is the D7100, which again has a small frame, SD cards and video. If I want video I use my 12mp Samsung III phone, which produces great video.
I also think that part of my reasoning to upgrade to FX is to do some justice to a new lens I had been after. I originally wanted to get a 70-200mm f2.8 VRII, but now that the f4 version is getting such rave reviews, better VR and is so much lighter that's what I am aiming at. But maybe I am barking up the wrong tree, maybe the 70-200mm f4 will be astounding on my D300. That's why I created my original post to get some sense of reasoning. Thanks Andy