I'm fascinated with these posts in which people who have not seen the camera or comparative files from it pronounce it to be worse in low light than the D700.
The virtual reviews are rampant, and met with counter-reviews.
I saw a comparison published and my impression is the D800 was equal to or slightly better than the d700 in low light performance, most noticeably in the shadows.
My understanding is that I can shoot in a lower resolution for snapshots, and save the raw 36 mp shots for particular photos with greater potential. A 2tb drive is about $150 today. Isn't that enought for 10,000 200 mb images?
Given the d800 is nearly the same price as the D700 at launch, it's an impressive advancement in features. I will be happy to trade up the the d800, because I want to.
I hope more People pass on the d800. That's all the sooner mine will arrive!