As of today, I'm saving up for a retina MacBook Pro. In order to know exactly how much I should save up, I'm going to ask you a question. Which options (SSD/RAM/processor) make the best value for the money (as in dollar/GB and such)? Right now, I'm looking at two upgrades: the SSD (I have 160GB in my current cMBP), and the processor (which one would be enough for a GarageBand project that has ~15 tracks?). I figure the RAM is already taken care of, since 8GB comes standard with the SSD upgrades (my cMBP has 8GB right now.) Based on what I described, what do you think would be the best value for the money (keep in mind that I get the Education discount)?