I'm planning to buy a Macbook Air 13". The base model which has 4gigs of RAM is $999 @ BB. I'm not familiar with the taxes in US, but for Iowa its tax is $60. (I'm not a US citizen, I'm an exchange student.) It makes $1060. The one which has 8gigs of RAM is only available at Apple, and its price is $1199, and tax is $71, so it makes $1270. Base version is $210 cheaper, should I pay that extra $270 to have 8gigs of RAM? I will sometimes use Windows 8.1 w/ Parallels (or maybe I'll use Bootcamp - not sure about it), I will use Windows for some Windows 8 apps (Foursquare, Shazam etc.) and programming (Visual Studio). While I'm using those programs probably an internet browser and iTunes at OS X will be open, too. I suppose I should give 2gigs to Windows and 2gigs to OS X (For parallels) Will 4GB be enough for me? With that $210 I can buy some other things for me. Addition : Is there a difference between buying a Mac from BB and Apple?