I've got a 130 GB Zune. The battery in my 4GB iPod Nano went kaput, so I wanted to get a player that could hold the 40GB of music I had, because I didn't like constantly swapping out songs on my Nano.
I had played around with a friend's iPod Touch a few times, and I didn't really like it. I found the touch screen either unresponsive or too sensitive much of the time.
I really like the Zune's interface though, it's great. In fact, I like it far more the iPod Classic. The only thing the Classic has on the Zune is the scroll wheel (better than the Zune's touch pad), and better software.