Originally Posted by d.bradley 
It looks to me like the K20D is second only to the D3. I'm impressed.
My thoughts exactly. The D3 is the clear winner in the high ISO category, but the K20 is a close second and the rest fall away rather quickly. I am really disappointed in the 40D. It is the lowest resolution so I thought it would have low noise, but that's not the case. Good job Petnax!