Kingdom Hearts 2 Final mix Plus comes out eventually, wait for that one.

I'd tell you to get Shadow of the Collossus, 'cuz it has long stretches of awesome and more people need to buy it so we can get more games like that.

God of War is great, and is pretty much guaranteed to be cheap now.

If you intend on getting a Wii eventually, wait for that to get Twilight Princess.

So my answer is conditional. If you are going to get a Wii sometime down the line, skip the GC version and get Shadow of the Colossus. If you're not gonna get a Wii ever, then Zelda.