Hey I need to purchase a notebook today or tomorrow. I went into the Mac store to decide which macbook I would like, but my decision is still up in the air. My option was between the lightweight macbook Air 13" with i7 upgrade, or the base model Macbook pro 15" with and upgraded ram of 8gb. I do not have a desktop so this is will be my only machine. I like the lightweight of the air because I am a college student, but the upgraded stuff "under the hood" of the Macbook Pro makes me think. What do you guys think?