I picked up a D800 in mid-December and I am very pleased. No left focusing issue that I note. I am still learning all of the capabilities, but this camera appears rock solid and I am pretty picky. Unlike the ill-fated D600, Nikon appears to be shipping a decent D800.
I took the D800 to a museum the other day that had a thing against flash photography. No problem. I took many photos on a tripod. The lighting did not really matter. I moved the focus point all over the map. Of the 80 shots or so, I came away with one that looked soft and I believe it was some diffraction because of shooting at F/11.