Umm rigid? I think you'll find options for things on the Mac that you had npt even dreamed of, especially if you are comparing it to the Amiga. There is a reason for the size difference you know. Also the Mac terminal has far more power than the Amiga CLI. Think of it this way, the Amiga is a catamaran whilst the Mac is an Ocean Liner.
Anyway, Tiger should work ok, but forget about Leopard and you probably can do Adobe CS3 only in geologic time, but some light small apps should run fine.
