Wait until next year when the high end Chromebooks are updated with newer models. Those are the only ones worth getting.
With the internet changing as fast as it is right now, you're not going to get much out of the Acer and the Samsung model they just introduced. They are low end, have cheap hardware, and yes, the Acer one has a horrible battery life. But the biggest problem will be a year or so later when the hardware won't be able to support the various improvements in graphics and video, etc that we'll see by then.