The A-body Canon cameras make for some of the best entry points to film photography out there, and in my experience, it is the A-1 that stands above models like the AE-1 or AE-1 Program.
If you used to shoot older Nikon or Canon film cameras, you can probably still use your lenses. Nikon has used the same lens mount system since 1959, while Canon has used its mounts since 1987.