I am about to pull the trigger on a new IMAC 27" with 680MX, 8GB, either a 1TB Fusion, 3TB Fusion, or SSD. But my question is should I go new, or REFURB? I would save a little money (not much), but read on here some people having issues with refurb 27s. Also I can't seem to find a refurb with 3TB Fusion or SSD option and 680MX together. Seems to only be the 1TB and 680. What are your opinions on my spec choices and refurb and new? Thanks guys! Making the official switch to complete MAC from PC.