My wife's a professional photographer and we are upgrading her early or mid 2011 17" MBP (which I put a 500gb SSD in a while ago). It's primarily used for editing through Photoshop. She is considering a 15"MBP or i7 iMac. We are upgrading because it chugs somewhat hard when she dumps a card of raw files on it and is trying to sort through the pictures (in bridge?) to decide what to keep for editing. She needs pictures to pop up at full resolution as quickly as possible to sort out the ones with focus or other issues, etc. My fear with a fusion drive is that she dumps files on they'll go to the HDD and her read speeds when she pulls them up to edit later will be terrible. Is a fusion drive going to impede this so we should go full flash memory? Will the 16gb ram upgrade be worth it? Hopefully there are designers and photogs here who can chime in. Thank you so much for the help and guidance. I'm sure you all know the tedious process of the initial pass through a shoot, and anything to save time in that regard will be a huge deal and money well spent. Really, anything at all is appreciated with a purchase this large. Thank you!