I need a laptop for college I want to game on it and I'm currently stuck between a Y50 and Alienware 13?

Okay I need a laptop for college this fall and I need somthing not to big but somthing where I can type papers up and also do some gaming on high to ultra settings. I do have a custom gaming rig I buitl. I need a laptop thought that is nice and portable. So which one is better Lenovo y50 or the Alienware 13? Also how good is the GTX 860m because thats what both of these have?

Alienware is just more expensive but slightly better

The Lenovo is cheaper for what you get. The GTX 860m is like a GTX 750ti. So pretty good but I wouldn't say ultra settings.