I did some research before buying mine but unfortunately I always stay on the bigger sites (CNET, Gizmodo, engadget) and in retrospective their reviews seem as they didn't actually do much with it except evaluated on looks and superficial tasks.
One of the things I would've liked to know is that you can't put sideloaded books on your home screen.
I know a lot of things might come in the future or can be fixed by rooting, but this shouldn't be taken into consideration in the present time. Sometimes I wait for future updates on devices that never come. Such is the curse of the early adopter.