Is nikon D90 worth over a D7000? Hello guys, so, i have a nikon d200 and since it is reaching its end life, i want upgrade. I am torn between d7000 and D90, here where i live, d90 cost half the price of the d7000, is the image quality between them worth the price difference? I don’t pretend using it to video making, althought i like astrophotography. (Does the iso/noise perf. d…