There are two devices in this review. The first is something like an appliance — a window through which you casually view content, a way to listen to music, an e-reader for the train ride home. On that device, things like a big app selection or elaborate user experience take a back seat to content selection, price point, and simplicity. On that device, it's not about going toe-to-toe with the competition in every way (as Amazon seems to want to do), it's about offering a lot of fun stuff to consumers, and getting them to consume more. As that device, the Fire HD is a complete success. A marvel of bottom-line engineering and incredibly clever subsidies. It's a really, really good tablet for doing some very specific things.
But there's a second tablet in the review as well. One that gets compared to the iPad and Nexus 7. One that I expect to do more than just show me movies or help me shop. One that should be a companion for all kinds of things I want to do, that doesn't feel limited, that doesn't respond to my touches slowly, that doesn't make me wait.
As that device, the Fire HD still has a long way to go. I think it can get there, but it isn't there yet.