So, I've been wanting a second body. I haven't used the autofocus too much, so I was planning on getting the older EOS-1 as a second body. But when I heard about the better flash coordination of the new EOS-3 plus EX550, I decided to go for the 3. Very First Impressions Basicly, a 1N user will fit right into a 3. The controls are identical, and nearly identically placed.
Display is about the same.
The AF sensor lights spill over onto neighboring sensors and look a little cheap. The entire body is a bit lighter and doesn't emotionally feel as strong but if there are impacts that would break a 3 but not a 1N, they are probably very rare. The fact that it comes up with an average exposure tricked me for a second. Thats not the important part. In spot meter mode, you look around the scene and press the FEL button for the lightest and darkest areas, along with perhaps a few middle tones.