Once a payment clears "pending" in a day or two, I will have the funds to buy my new iMac (albeit without having a buyer for my existing machine lined up, oh well). I was dead set on getting a used 2010 27" from craigslist from a local guy. specs: " $2,300 - 2010 iMac 27" Screen 2560x1440 2.93Ghz Intel Quad Core i7 12GB RAM 256GB SSD 2TB HD 1GB ATI Radeon HD 5750 Apple Bluetooth Wireless Keyboard (unused) Apple Bluetooth Wireless Mouse (unused) Includes original box and packing materials and all disks and manuals." Not a bad deal. No need to monkey around with opening up the mac or ordering more ram or anything. Easy enough and a fair price. Uh oh. I just found this site: www.expercom.com and they are selling a "new" version of the same computer, but with slightly different specs for what appears to be a VERY good price: "$1,898.00 - 27" LED Display 2560 x 1440 resolution 8x double-layer SuperDrive Radeon 5750 Graphics with 1GB 2.93GHz Quad Core i7 16GB (4x4GB Expercom) RAM 2TB Serial ATA Drive Apple Wireless Magic Mouse Apple Wireless Keyboard" Almost the same, but I get 16GB RAM with the expercom vs 12GB with the used mac. It is also cheaper. But then I need to install an SSD on my own. I see this as a double edged sword. By getting the new one and installing it myself, I can get a higher quality SSD for cheaper, but I need to install it myself. I would buy this Intel X25-M 120 GB 120GB (I have no need for 256gb anyway, I currently get along more than ok with a 90GB ssd) for $280 bringing the grand total up to $2,180. Still cheaper than the "used" from craigslist, but barely. Bit more RAM. Much better SSD (From what I understand, Intel X25-M is MUCH better than BTO SSD). Here are my main questions: Is the pain of the DIY install worth the extra performance? I installed my last one but my understanding is that it is more difficult on the 27" ones? Yellow screen. I absolutely can-NOT be bothered with a yellow screen. I use the computer for professional photography uses and really do not want to return/muck around with a bad screen. I have not followed the yellow screen issue in the slightest, as it has never been of concern to me. Of course I will be able to try out the used one to check for any screen defects, but is there a risk that the one from expercom will ship with the faulty screen? Thanks a ton. Sorry for going on and on!