I am newbie to this forum plus to Mac. I have been windows user all my life and thinking of switching over to Mac. Don`t really have a lot of money but around $1200. I have two set of confusions. First is 13' Air vs 13' Pro, in $1200 I get Air with 128 gb or 500 gb Macbook pro 13''. I like Air for having SSD but only issue is that in my budget all I can get is 128 gb which is not enough for me at all. But Pro has 500 gb which is good for me but I wish to have SSD because I want a fast computer with enough storage. Second confusion that I have is I saw on Best Buy Apple® - 13.3" MacBook® Pro - 4GB Memory - 500GB Hard Drive - Model: MD313LL/A just for $899 ; which I know is sort of outdated. But I was thinking if I buy it for $899 then is there a possibility of making it better and still staying under $1200 in total. Like upgrading memory on it plus adding a SSD of around 128 gb for OS/booting so it can be faster and better? If its possible plz lemme know if I can add additional SSD to HDD or I will need to replace HDD with SSD? Lemme also add that it will be my primary computer, used mostly at home. For playing high resolution videos (1080p) and sometimes Video encoding, casual games like Fifa etc and surf web with multiple tabs and flash websites etc.