http://www.nikonchat.com/nikon-d80-camera-settings/

Why should I buy the Nikon D80 digital SLR camera compared to the D40x?
I take a lot of indoor photos, as Most pictures, and how to use manual configuration. I'm tired of the quality point and shoot cameras and want to move to digital SLRs. I have Nikon lenses, so I'm wondering if the D40x is pretty good, or I wish some feature that the D80 has? What would you recommend? Updated: The criticisms seem to say that the D80 has some exposure problems, and some other problems with "white pixels. The D40x is not very well built and suffers from the lack of lenses available. The specifications are almost identical. Is the D80 really worth ~ 50% more than the D40X?
Check Compatibility lens before buying the D40
Using Prof Kobre’s Lightscoop with your Nikon D80