I bought this yesterday thinking I got a better deal.. But then it hit me that I might have made a big mistake because for a few hundred more I'd be able to buy the low-end retina imac with better display, processor, keyboard/mouse, gfx. I do graphic design work but I didn't feel the retina would make a difference in my productivity. I kind of feel tricked, the refurb prices don't seem that great. Would you return it if you were me?