I am currently shooting with a Nikon D50 and the the older 80-400vr lense for bird photograph mostly. My plan is to get a 2nd body and use the same lense with faster FPS and aprox double the pixels from 5 to around 10 or so for prints . Regardless of price what would be the best upgrade to get and still use the older 80-400vr lense. An auto focus motor in the body would be preferred and similar colous/results as the D50. A little better lower light capabilities would also be preferred. Thanks for any input, will keep the D50 to shoot with the 5mm F1.8 for the odd non zoom shots.