Hi everyone I would like to buy a Macbook soon, to replace my 2008 Windows based 17" Dell laptop. This will be for me a transition to the Mac world, so I'll be using both Windows and OS X (possibly via Parallels). I need to stream videos, multitask light apps, do a bit of graphic design, I'm not a professional so I'll just need an honest machine for the lowest possible price. How much space do I need to run Windows + OS X and install some software? is 128 GB enough? I hardly play any videogames, I guess this should help... As for the RAM, will 4GB be enough for the next 3-4 years? Finally, I'd like to buy the Pro rather than the Air due to the Retina display (image quality is a primary concern for me), unless you guys tell me the Air has a similar image quality. 6-7 hours of battery are more than enough for me, portability is not a major issue, although I'll be moving my laptop from a room to another. Or should I go for the 8GB RAM -256 SSD version instead? Thanks in advance!