I just got a new Nexus 9 the other day as a replacement for my aging Galaxy Note 10.1, but I really don't like it so I am returning it and thinking of getting the Pixel C. Probably my chief complaint with the N9 was that the battery life was not particularly good. I fiddled with the usual suspects (screen brightness, bluetooth, etc.) and the most that I could squeeze out of it was a little over seven hours, and that was with the screen being uncomfortably dim, and not playing any games or doing much web surfing. Also, I thought that the screen size was not small enough to be significantly more portable than my GN10.1, so there wasn't a valid trade-off for the loss of screen real estate. Plus the screen ratio meant that movies were even smaller because of the black bars at the top and bottom of the screen.