I decided to gamble a bit and try a referb machine to replace one of my everyday work machines. So far, this system has performed perfectly! I did install a ssd instead of the included 500gb but otherwise left it as stock. I might upgrade the ram in the future. As far as referb quality goes, it is a bit sketchy with a few dust bunnies under the power supply and scratchy exterior. At this price though, I had no problem with that. If it was a $500+ then I might have an issue. It also came with a cracked mouse but I usually trash them anyways as I prefer wireless. At this price, I have a lot of tolerance. I added a display port monitor and vga for a dual monitor setup. Again, works fabulously and much better than a brand new i3/i5 computer ($599 - $899) range. Perfect work computer!