I have this notebook for nearly 2 years. On the performance side there is nothing to comment on, works really nice, fast CPU and the SSD also helps. However in terms of build, it is the by far the most problematic gadget I have: I used this laptop mainly while traveling (used because even though I still have it, I don't use this anymore, changed to a Surface that works great). Usuall I was traveling once a week, so you can imagine the laptop wasn't used much. Yet, after several months the laptop turned off while working on it and couldn't get it back on. As it turns out the motherboard had a failure and the service changed it. When it came back, the laptop was not working without staying plugged in. Sent it back to the service and when returned and they had it fixed. To my surprise that the battery was not holding on anymore - at around 35%-50% of battery, the laptop was turning off. I sent it back again, and they said by that time the battery was not in warranty anymore and it costs 120 euro to get it changed. I didn't feel it was right as this drop was all of a sudden, and I also didn't use the laptop that much to explain the battery failure so soon. So I rejected and since I haven't used the laptop because I didn't want to spend money anymore on such a device that breaks so fast. This was also a poor service experience, not only of the product. One other thing that created problems - the protection grill on the vents on the bottom of this laptop breaks easily without doing anything, and I wouldn't be surprised that because of them the motherboard broke if they went on the circuits there.
Performance is not everything although is important, but the way this laptop has been breaking down on me, I would honestly not recommend it to anyone, and be very careful of Asus products (they might look nice and come at good price, but you may end up paying more in the long run)