I recently ordered a D800 refurb from BH, i felt after some tests and shooting with there was a left focus issue. I brought it back to B&H for a return and tried out 2 other refurbs which to me seemed to have the same issue. I was not happy so took a refund and went home and ordered a brand new D800.
I'm just so surprised that a problem nikon knows about couldn't even be fixed on the refurbs, probably one of the main reasons the cameras went back to nikon???