Nikon F3 is a real workhorse of a camera. It's well built and there are plenty of good bargains to be had. Beyond that you have a wealth of lenses to choose from and you can change your focus screen whenever you want. Screens are reasonable priced. The big baddy with the F3 is flash. You need a special adapter for flash shoe.
Forgot to add one important detail: price range. I'm looking at around $100 for a body. I also have no interest in flash so I'm not willing to pay more for those features.