Just need some advice before I go for it and order my mac!!! I only have £1500 to spend max!! What Im going to be doing is short films and messing around on FCPX, motion and hopefully after effects. No pro work just things to keep me amused but the Mbp I have at the moment just can't cut ( 13" 2.3Ghz dual i5 4G ram) I know the top spec 27" would be best but which of the other would be best? But would the following still do an ok job? Base 27" no add ons 21.5" 2.9Ghz model with 16G ram Base 21.5" with 16G ram and fusion drive Or are there other options I have not thought of?