Goku vs Superman

[Gahmstead]

The title says it all. If these two power houses clashed, assuming neither would hold back for any reason, who do you think would win?

I think if we're talking Superman as he is currently in comics against Goku at the very end of DBZ, Goku would win. Any time his fight with Frieza, I would probably go the other way. By the time the Buu saga rolls around, I think Goku is strong enough to hurt Superman without exploiting his weaknesses (magic, Kryptonite, red solar energy, etc). There is also the theory that chi is a form of magic, which would work against Superman's weakness. That's not to say that it is completely one sided.

What do you guys think?