Got mine yesterday. So far, I'm on the fence. Absolutely LOVE the speed. Machine is lightweight. Battery life so far is as expected (8+ hours) - used it for about 4 hours last night and still had ~60% battery left. Connected flawlessly to free 4G, my WiFi, ChromeCast.
What I have some issues is getting used to the Chrome "OS". It's odd having everything run through a browser. Setup was a little clumsy, but once I got the hang of it, it was OK I guess. Have not been able to successfully set up an air printer with it yet, although I think that's more of an issue with my crappy old printer than the ChromeBook). Will take some getting used to, but for what I intend to use it for (browsing, streaming, email), it's as advertised.