So I just received my Macbook Air 13" 2013 and I'm not impressed at all. Coming from a MBP (and also had a MBA 2012 briefly), this is disappointing: Scrolling in safari is sluggish compared to the 13 MBP 2012. General lag in UI. Black marks on the bottom of the case (looks like tarnish, doesn't come off). Looks like I have the volume fluctuation problem, updated fully too, still there. No wifi problem it seems. Battery is at 75% is reporting 5-7 hours with only Safari open. Battery has 2 cycles on it already! I just opened it up 3-4 hrs ago. Did Apple send me a refurb when I bought this new??? Suffice to say, it's going back. The 2012 Air's I tried had various quality control issues. Apple has really lost it (besides their MBP line). EDIT: Forgot about the hinge, it's pretty loose. It'll start to slowly close very easily when moved towards me.