A few days ago I ordered a Macbook Air, the base line with a RAM upgrade to 4GB. I was wondering if anyone knew the actual capacity you have after the OS installation and restore partition that is on it? I bought the baseline as I am primarily going to be using it for college (word processing, data analysis "Excel for example", and of course web surfing along with maybe some youtube browsing. I however went on the internet a little while ago looking at Microsoft Office as I may want to load that on it, and I saw that it in itself was about a gigabyte. It gave me a limited feeling with the 64GB SSD. I am not saying the 64GB will not do for me, but the slight "restrained" feeling came about. So back to the original question, how much free space is there out of the box? I have yet to receive the Macbook, should get it by the end of next week, so needless to say it has not been opened or tampered with in any way (by me). Is it possible to do an easy exchange in my local apple store? I know they allow exchanges, but the question lies with the fact that I "personalized" this one in upgrading the RAM. I still haven't made any decisions as the 64GB SSD may be enough for me, at least I originally thought so. But I DO want to stay away from paying ~$300 down the road for a 180GB SSD. In that context, $150-$200 more for the mid Macbook air is a save.