I am trying to sell my Rev. A MBA to get a Rev. C 2.13GHz 128GB SSD. Looking to read comments from people who did the same. Can Rev. C finally play a movie without skipping frames? Can it run 4-5 apps without the fans kicking up to 6,000 rpm? Also the iSight on the Rev. A is a POS. Have they upgraded it to a better one?