Okay guys need some advice here. I am really looking to cut down on weight as I am going back to school. I currently have a 2012 mid 13in non retina pro with 8gb ram and 500gb hard drive. The battery is down to about 1.5-2 hours of usage and the super drive doesn't work anymore and it's pretty beat up cosmetically. I will be going back to school as a business major so will be using a machine for word excel some Photoshop and hearthstone. Will I see a huge imporvement by getting a MacBook? Love how small it is. Or would a MacBook air be good enough as I am not used to retina screens. Really not looking at the pros right now as I want it to be light. What do you guys think?