My school gave me a macbook air in 2015 and I'm graduating in the summer of 2018. I'm torn between buying it for 430 pounds or returning it and buying a new one for anything between 400 and 600 pounds. Only catch is I want to play league of legends, right now I am playing it on my mac which has taken some damage and become a lot slower. What should I do, buy the mac or buy a new one in the aforementioned range?