Hi. I start law school next month and need a new laptop. I am deciding between the Air 2015 and new MacBook 2015 with the Core M processor. When I customize a 13" MacBook Air, I get it out to about $1239. With the base 2015 MacBook, it comes out to $1250. I love the retina display, but it comes at the cost of battery life. I just need to type notes, memos, and essays. I also want to watch Netflix a ton and be able to get the best laptop to last about 5 years. I want to be future proof for the next 2 years, so I feel 8gb of RAM is a must. Any advice?