Hi! I am thinking about buying a new MacBook as my MacBook White ('10) is become to slow for me. I am forced to choose between two base models:   -MBA 13" (2012) + 8Gb of RAM   -MBP 13" (2012) + SSD   The price difference between these two options is not that big so that is why I am considering both options. I am not a hard-core computer user: my MB is mainly used for studies, YouTube, iPhoto + some photo editing on Pixelimator, iMovie; moreover, I would like...