I have been using my new Nikon D600 for a couple of weeks now, and have found it sensational. With 24.3 megapixel capacity the images are crystal clear and sharp without any noticeable noise.
For the price of $AU2500 (body only) the D600 must be the best value for an SLR on the market today. 9.5/10 from me.
Nikon D600 review here : www.digital-photography-school.com/nikon-d600-review