Hello everybody, I'm going to be starting my Ph.D in Maths in October (I'm a British Student fyi), and I know that I'm going to get a MacBook Pro 13inch retina, but I'm just a bit confused on what hard drive size to get? I'm a bit miffed that the skylake processors aren't coming out till the new year but hay-ho. I'm going to get the top specs, i7, and RAM, but the 256GB is an extra £200. I want to have software like Matlab, Mathematica, LaTex, stuff like that but I was just a bit unsure about how much room left on the hard drive I will have after the OS and the extra software mentioned above. So I guess my main question is: Will I have enough hard drive space on the 128GB MacBook Pro for the OS and the extra mathematical computation software, and a few extra documents, or should I bite the bullet and pay an extra £200 for the 256GB hard drive?