...here's the deal with Otterbox for the Kindle Fire HD (8.9):
I am *totally* confident it will protect the Kindle from all but the most violent (or saturated) mayhem. And although I'm not willing to deliberately drop test it, I am real confident that should an accidental drop take place, there's a real good chance my Kindle Fire will be shiny and functional. So for protection: this does the job with flying colors. The fit, finish, conformity with the Kindle and access to ports and controls is outstanding, so you can select with confidence.
But if you've read all the five star reviews, let's engage in a little expectation management.
First, the Otterbox is undeniably bulky. Choosing it will triple the thickness of what you carry around. Obviously, no protection is going to come without added size, but be aware.
Next, lets talk about installation of the Kindle into the Otterbox. The bad news is that if I were to rely on the included printed instructions, I might still be trying to figure things out. Save yourself some trouble: go directly to Otterbox's online video (easily searchable on the most popular video content site) and watch the video about how to disassemble the case components and then reassemble with the Kindle inside. While none of it is hard, some of it (separating the silicone from the polycarbonate shell components, for example).
Finally: uber-premium sticker pricing. I acquired mine at about half the typical sticker price from a popular daily deals site (whose name is similar to "hoot"...but starts with a "w"). At this price, this becomes a superb value for the money. At sticker price, it becomes just another of those things that you know will work very well, but that you resign yourself to little extra dig into your pocket that's coming. So stay alert for reductions that can be found...