Hi all Long time lurker here. My iMac is getting old. Its a 2010 27" i3 model, 8gb ram, etc. It certainly does its share of chugging. I want a faster computer, use for general use and occasional raw editing in Aperture. Which would you do? 1) Upgrade the CPU to an i7 870 (should be just a direct swap), and add an SSD to try to create a homemade fusion drive 2) Get a refurbished 27" iMac, may or may not have a fusion drive. I'm torn, and would love to hear what you guys think. Thanks!