Hi. I'm getting a laptop for graduation so I need to pick one soon. I'm going to be taking it with me to college. I want to get one thats going to be powerful enough to play games well. 15in seems to be a good size . I was looking at getting Asus M51sn. It seems to be one of the more powerful ones that has a 15in screen. Is it a good choice or is there something better that I haven't seen?