I'm trying to decide if i want to get 4gb ram over the standard 2gb in my new air (unless the new come standard with it that is). Now i'm pretty sure that i do not really need 4gb as my tasks include web surfing with many pages at a time, iTunes, microsoft office apps, and then maybe some imovie and photoshop, with all or most open at the same time. First off, does all of that even take up 2gb ram if open all at once? (i think not but correct me if i'm wrong) and second, if it does not take up 2gb, would it still be worth it to upgrade to the 4gb ram? (once again, if it doesn't come with it already) And would the faster performace from the SSD and the new processors make up for any ram i was short on?