iPod or Zune?

[happiholic★]

Okay, I know that there was a thread on this topic about a year ago, but it's referring to older versions of both products. I think.

Anyway, my Creative Zen is now a useless piece of bum, and the store from which I bought it is giving me a credit to replace it. So, after talking to the sales guy, he convinced me that the iPod is a really good choice. However, after browsing, I realized that the Zune is very similar.

Which is the better product? I'm talking about the 120GB version of both players.