So I had ordered the base Retina MBP yesterday. Today I cancelled and ordered the stock top config of the 13" MBA. The following factors affected my decision: - Weight. 4.5 lbs for Retina MBP still too heavy for frequent travelers. - Cost of Entry for latest and greatest. - 1st Gen Product issues for Retina MBP. - Software support for Retina Display. - Reassessed true requirements in terms of power. I sold my 2010 Ultimate 13" MBA on Sunday for $1000. Cost of Upgrade = $500. Some times it takes time to rationalise your true requirements and assess pros and cons. Still wishing for a 15" MBA no heavier than 3.5 lbs.