Good choice man. I love my Y40. Gaming is a breeze but the screen isn't the brightest, keyboard and trackpad are perfect, size is just right for mobile gaming and the battery life is decent for a laptop with a dGPU. Do wish that they put a back-lit keyboard in but the keyboard does feel nice.
So, just got home to my house being broken into... Lost a monitor, headset, microphone, TV, roommate's iMac, 2 iPhone s, Xbox, bunch of cash and some other stuff got stolen but the desktop is still running BOINC projects, so there is that.