Go for the review at www.dpreview.com
The sharpness and noise level when shooting with high ISO of Nikon D200, can't any way beat Canon 40D. How about technology, 12bit of Nikon D200 vs 14bit of Canon 40D ? The color bit depth is significantly different ! Besides, the sales price of Canon 40D looks more charming than Nikon D200, even the camera will soon get obsolete ! Anyone here be the judge !