I own all three of those cameras. They are all excellent choices. I bought my EOS 1 new in 1991 and it is still my go-to SLR. It's only been in the shop once (because it fell over on an unsteady tripod onto concrete which caused a tiny crack in the top body piece, but NO other damage). I even fell down a flight of concrete stairs with it once that left only a scuff. A real tank.

A couple years ago, when the less-enlightened began dumping film cameras onto the used market, I picked up some "back up" bodies on eBay. An EOS 3 with booster and a roll count less than 50 for $250 and a barely used 1v and booster for about $350. As I'm sure is true with most of the gearheads among us, the flocking to digital has had one positive effect: I can now afford much of the equipment I spent my youth drooling over in the back of Shutterbug magazine. If only EF lenses and flashes saw the same price drop...