So after months of saving and waiting, I have enough for the Ultimate Macbook Air. There was no question of upgrading the RAM to 8GB, but now I'm at a uncertain point. I can buy the Macbook with 256GB now, or I can wait another long while for the 512GB, but I'm not sure. The extra space is tempting, but after having a Macbook Pro and iMac before, I'd just use it for Steam, which I'm thinking of just having on a USB 3.0 Memory Stick, which can make it a lot easier for situations, and my iTunes library was around 170GB due to mostly my ripped Simpsons 'good' seasons of 1-9, and nowadays, especially with iTunes Match and having that on an external drive now, I'm not sure whether I even need all of that on the hard drive. There's also another point of having a backup of my old Macbook Pro from a year ago, which has a 450GB backup, am I able to pull certain files from that into the Macbook, or can I only restore everything if I only have the required space? Any advice would be great, I'm about to click 'Order' on the Apple site now, so it'd be appreciated!