The Asus is nice, you should also look at the Lenovo Y460P ($509 refurb on eBay) and the MSI X460DX-008US.
I have an X460DX, the i5 version, and it owns.
Long battery life, very fast, and runs even cooler. I was just playing MW3, and my GPU hit 63C max! And, it's overclocked to 775/1550/925, up from 672/900/1344.
I had an Asus K53TA, basically the same laptop. It was nice, just a little too big for travel.