The ViewSonic ViewPad 10pro runs both Android 2.3 Gingerbread and Windows 7. It’s a shame they didn’t get Honeycomb under the hood of this 10.1-inch slate, but at least you have Google and Microsoft working together under the same framework. To make things more interesting, this is one of the first tablets to be powered by an Intel Atom processor.
Maybe you’ve already decided that you don’t want an iPad and you’re not interested in webOS. That leaves you with Windows 7 and Android for your tablet needs, if you cannot choose between the two you might want the ViewSonic ViewPad 10Pro, then, since it sports a dual booting.