Would it be smarter to go with a maxed 21.5 iMac or a baseline rMBP for video editing. (not movies but heavily cut up, efx driven montages for now) I'm scared that the 5400rpm hard drive in the fusion will eventually slow me down after a while when recording video. Or should I get the iMac maxed and maybe think about getting a 7200rpm thunderbolt drive to record to instead?