I'm thinking of buying my first apple computer. It's not in my budget to pull out all the stops and go top of the line for all components. However, given the difficulty of upgrading CPU, video and the drive, I'm leaning towards 8gb of RAM, i7 processor and either 256gb flash or 1tb fusion drive. I will be likely running windows on the machine very regularly to run Revit. I am looking forward to running AutoCAD for Mac natively on it. I have been spoiled by the retina display on my ipads and iphone, so a non retina display isn't an option. I also qualify for an edu discount as faculty at a local community college so I can save a few bucks there. All of my recent work, and home, computers have SSD drives and I remember the pep that going to SSD made to those systems. I am concerned that the Fusion drive is just a gimmick and its performance might make me regret going back to spinning platters. Would I be better off with the 256 flash, or the tb fusion drive? I don't mind saving my data to a separate external SSD if it's all fast enough. Any Fusion Fans out there who have an opinion on my situation? Big Edit: I should have said the 256gb of flash, not 512...can't fix the title.