I got my iMac 5K when it came out. I am really happy with it and have no complaint so far, screen is gorgeous. Prior to that, I have been using my iMac 2011 since 2011. Never had a problem too. I want to sell it now, there is not point to have 2 computers at home. I posted it on craigslist for $1450. But received no reply for the last 2 weeks. I live in Houston, I wonder if anyone know a place where I can take my iMac and physically trade it in? My iMac spec are, i7 3.4GHz, 16GB RAM, 2GB Video, 2TB Hard Disk. It looks like a new computer.