OK, because I value your opinions .... I am transitioning out of a 2010 MBP 2.66/8/500 to a MBA, which I will use for trade show videos and general client Keynote and PPT presentations. I am in the broadcast biz, so the video playback quality and audio is important. I have choice of the following: A NEW - MBA - 8/2.0/256 at $1,731 total, or An Apple REFURB - MBA - 8/2.0/512 at total $2,024 Diff is $293, which would you buy for my applications? Thanks!