Is there a site where I can plug in the particulars of my current laptop (2009 17" macbook pro) to compare it to current new macbook airs and macbook pros? I would like to compare my current computer on which I run photoshop to see how much faster, if at all, photoshop would run on a new air and new pro. This might help me decide whether or to upgrade now to a new computer and, if so, which computer to choose.