The Motorola Xoom Tablet might not have an operating system that's "finished", but it is still the most promising Android tablet so far. That's because of its tablet-oriented Honeycomb OS, but it's also because it's a nice tablet. [Motorola Xoom]
As an MBP/iPhone user, I'm really liking what I'm seeing here and seriously considering a jump to Android for phone and tablet this year if Apple doesn't step up their game.
I'm an Apple product user, but not a fanboy. I moved to OSX because it looked better than WinXP. In the mobile world, Android is starting to look pretty damn good.