Thank you sir! All the ports have the same levels. C64 was the original version and has its own charm. The Amiga version has the best sound effects, and the Atari ST Hi-Res version has the best graphics. I'd say pick a version which is the easiest for you to set up the emulator for.
There is also an NES version available.
Or just play the Windows/Linux version which uses OpenGL shaders to render light and darkness more realistically.