Got this model in August of 2014 and have used it multiple times every day since then. There was a brief period when certain keys seemed less responsive, but that went away and there have been zero problems otherwise. [I’m using it now.]
The battery life is good, and for the usual uses for Chromebooks, it works well. I also stream movies and audio with no problems.
My wife prefers a bit smaller unit. In comparison, I got two smaller Samsung Chromebooks and both power supplies failed in a year. Then the hinges on the Samsung my wife used daily bound-up and finally broke.
Hope this helps.