This is between Canon and Nikon.
If you have more friend using that brand. Go for that brand.
Nikon D7000 is the best for DX camera.
The spec even higher than the Nikon (FX) D600.
I am using a D7000 with 18mm-300mm Lens.
This is one of the best DX DSL on market and the price drop a lot since D600 come out.