I currently have a 2012 Macbook Air 11. It has always been one of my favorite (if not the favorite) Apple products. The only complaint I have about it is that on some video streaming sites, the fan runs like it needs more power and the battery life over all is around 3-3.5 hours. If I get a newer 2015 Macbook will I see a big improvement in battery life? A friend said they get 9-10 hours on their new Macbook Air 11. I also will get 8GB RAM this time. I'd considered a 12 inch Macbook, but the fact they are first generation sort of makes me want to stick with the Macbook Air product line.