Hello, I'm interested in buying a new MacBook Air. It'll be my first Mac since 10 years ago, when I bought an iBook G4. I'll be using this computer mainly for web development. Not design, only development. My current development stack is Apache, PHP5, Symfony2, PostgreSQL and NetBeans as an IDE. Sometimes I use The GIMP for slicing or resizing some images, but nothing more. I'm interested in buying an i5, 128Gb SSD MacBook. I don't need so much hard disk space (currently I'm using near 10GB including the Ubuntu OS), and my current computer isn't so fast, so an i5 is enough for me. But when it comes to choose screen size and memory is when questions appear: - Is 4Gb enough for PHP development and Mavericks? My current VM running Ubuntu is using only 1,5Gb, but I don't know how much memory OSX takes... - 11" or 13"? I'll be using some kind of "virtual desktops", but I'm not sure if 11" is enough or if I must go for the 13"... What do you reccomend? Thanks for your help!