As we begin 2013, we're stuck in a kind of tablet limbo. Most companies rushed to get devices out for the fall, while the models we saw at CES 2013 aren't yet shipping. As such, it's a mostly familiar deck, with Apple, Google and Microsoft once again striving for the top spot. That said, there are new entries from Amazon and ASUS, and many of us who didn't score some sweet loot this holiday season have
