I second this post. I can't say enough good things about the ASUS Transformer. The tablet rocks especially when you consider how much cheaper and open than the iPad it is. Not many people are talking about it here, I guess its still a secret with not as much publicity as the Zoom.
The Android OS right now is pretty close to iOS. Its a little less polished, and does suffer from the occasional bug, but for the price you're gaining flexibility.