I would go with either an iPad2 or a Netbook running ChromeOS.
The question is what do you want to do with it? If you want to do a lot of typing and editing then neither tablet will work and the Chromebooks are REALLY slick.
If you want the tablet experience - I'm not a fanboy of either Apple or Google - but the iPad2 is best for typing.
I've compared typing speeds and responsiveness between Android & iOS and iOS wins IMO.