I was fortunate enough to get a Samsung tablet from Google IO. I wanted to treat it like a shared device and eventually shut off Google Talk and Gmail so my family did not get annoyed by the notification messages when I wasn't using it. I don't like surfing on it (I also didn't like surfing on the iPad that I used for a few weeks.) Google Earth and Google maps are very good on the tablet though. It is basically a game machine now and sits on the coffee table when not charging.
However, I love both of my ChromeOS notebooks. They are completely interchangeable because my wife and kids all have Google accounts. Still slightly underpowered but we get many times the productivity out of the Chromebooks over the tablet.
The Kindle Fire tablets are interesting because they are cheap enough to have individual devices. I want to get one to try but will likely wait until version 2.
Just my $.02, YMMV.