I'm looking to add to the Nikon herd in my office. I've looked at the F4 (like it's ability to use older Nikon lenses), F100 (which my son has and likes) and an F5 (pricier but reportedly excellent metering). All are used and all have various scuffs and scrapes - which don't bother me since I would add them to a new camera anyway. What I'm interested in is your opinions on reliability of each. In perusing the internet, there are various horror stories about failures on the F4 and F100. Not so much about the F5 - maybe because it's newer. I realize that any used camera (and that's all I'm considering) could have issues, but I'm trying to gauge overall reliability between these models and I value the input of the members of this forum. Thanks in advance.