I ordered a refurb 15" base and a new 15" base and the differences are minimal, but there are some differences. The new one has a warmer screen, not as a blue of a hue to it and a quieter keyboard. The refurb has a little bit louder keyboard and the keyboard is a little bit looser feeling, also a cooler screen but overall, machines both run the same. Any reason I shouldnt save the $200 and use that for AC+ for the refurb?