F4. I've owned many F3's over the years (anyone who also hangs out in the manual focus SLR forum @ Nikonians can attest to that most likely), but, when it came time to add an F2AS to the bag, it wasn't the F4 that disappeared. Was the Nikon F3P that disappeared. It seems that I don't have the desire to own an F3 anymore.
The F3 is a good camera, but, the F4 trounces it.