What a difference a generation makes. While the original Kindle Fire impressed, there was only one thing that really made it worth considering: it was cheap. Really cheap. But, when we got our hands on the 7-inch, 720p Kindle Fire HD a few months back we had an honest-to-gosh nice device -- that happened to be cheap. And what do we have here? Why, it's a slightly larger version of that very same tablet, but at a significantly higher cost. It's the Kindle Fire 8.9, a tick under two inches larger at the diag