DxOMark tested the Nikon D600 and gave it an overall score of 94:
"Nikon’s recently released consumer-oriented full-frame sensor DSLR, the D600, has just gone through DxOMark’s image quality evaluation tests. And the verdict is in: with a DxOMark Overall Score of 94, the D600 is an affordable camera that places a high premium on image quality, as it ranks just behind the top performing Nikon D800 and Nikon D800E. It is also a significant improvement over the high-end professional flagship DSLRs, the Nikon D3X and the Nikon D4."
Read more on NikonRumors.com: http://nikonrumors.com/2012/09/19/nikon-d600-gets-second-best-dxomark-score-after-the-d800e.aspx/#ixzz26zTfmmAk
Via Philippe Gassmann